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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: #f5f5f5;
            color: #1a1a1a;
            line-height: 1.6;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 头部（淘宝橙红色主题） ===== */
        .header {
            background: linear-gradient(135deg, #ff4400, #ff6a00);
            padding: 14px 0;
            border-bottom: 3px solid #cc3700;
            box-shadow: 0 4px 20px rgba(255, 68, 0, 0.35);
        }

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

        .logo h1 {
            font-size: 30px;
            font-weight: 900;
            color: #fff;
            letter-spacing: 3px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.2);
        }

        .logo .sub {
            font-size: 13px;
            color: rgba(255,255,255,0.9);
            font-weight: 400;
            display: block;
            letter-spacing: 2px;
        }

        .nav a {
            margin-left: 24px;
            color: #fff;
            text-decoration: none;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
            padding: 8px 18px;
            border-radius: 8px;
            letter-spacing: 0.5px;
        }

        .nav a:hover {
            background: rgba(0,0,0,0.15);
            color: #fff;
            transform: translateY(-1px);
        }

        .nav a.active {
            background: rgba(0,0,0,0.2);
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
        }

        /* ===== 主横幅（淘宝橙红主题） ===== */
        .hero {
            background: linear-gradient(145deg, #fff5f0, #ffe8dd, #ffd9c9);
            padding: 70px 0 55px;
            text-align: center;
            border-radius: 0 0 50px 50px;
            margin-bottom: 30px;
            border-bottom: 5px solid #ff4400;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 68, 0, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 68, 0, 0.04) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero .badge {
            display: inline-block;
            background: linear-gradient(135deg, #ff4400, #ff6a00);
            color: #fff;
            padding: 8px 28px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 2px;
            margin-bottom: 18px;
            box-shadow: 0 4px 15px rgba(255, 68, 0, 0.4);
            position: relative;
            z-index: 1;
        }

        .hero h2 {
            font-size: 44px;
            font-weight: 800;
            color: #1a1a1a;
            margin-bottom: 15px;
            position: relative;
            z-index: 1;
        }

        .hero .highlight {
            color: #ff4400;
            position: relative;
        }

        .hero .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 100%;
            height: 6px;
            background: #ff4400;
            border-radius: 3px;
            opacity: 0.25;
        }

        .hero p {
            font-size: 19px;
            color: #2a2a2a;
            max-width: 700px;
            margin: 0 auto 24px;
            position: relative;
            z-index: 1;
        }

        .hero p strong {
            color: #ff4400;
            font-weight: 800;
        }

        /* ===== 立即领取按钮（淘宝橙红主题） ===== */
        .hero-btn {
            display: inline-block;
            background: linear-gradient(135deg, #ff4400, #ff6a00);
            color: #fff;
            padding: 16px 48px;
            border-radius: 50px;
            font-size: 19px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 6px 28px rgba(255, 68, 0, 0.45);
            border: none;
            cursor: pointer;
            letter-spacing: 1.5px;
            position: relative;
            z-index: 1;
        }

        .hero-btn:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 10px 40px rgba(255, 68, 0, 0.55);
            background: linear-gradient(135deg, #e63d00, #ff5e00);
        }

        /* ===== 通用标题 ===== */
        .section-title {
            text-align: center;
            font-size: 32px;
            font-weight: 800;
            color: #1a1a1a;
            margin-bottom: 8px;
        }

        .section-title .highlight {
            color: #ff4400;
        }

        .section-sub {
            text-align: center;
            color: #6a6a6a;
            font-size: 16px;
            margin-bottom: 32px;
            letter-spacing: 0.5px;
        }

        /* ===== 图文文章区域（8篇，两行四列） ===== */
        .featured-articles {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 32px;
        }

        .featured-article {
            background: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0,0,0,0.04);
            border: 1px solid #f0ece8;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .featured-article:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.08);
        }

        .featured-article .article-img {
            width: 100%;
            height: 160px;
            overflow: hidden;
            background: #f0ece8;
            position: relative;
            flex-shrink: 0;
        }

        .featured-article .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .featured-article:hover .article-img img {
            transform: scale(1.05);
        }

        .featured-article .article-img .tag {
            position: absolute;
            top: 10px;
            left: 10px;
            background: linear-gradient(135deg, #ff4400, #ff6a00);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            box-shadow: 0 2px 8px rgba(255, 68, 0, 0.3);
        }

        .featured-article .article-info {
            padding: 14px 16px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-article .article-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: #1a1a1a;
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-article .article-info h4 a {
            color: #1a1a1a;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .featured-article .article-info h4 a:hover {
            color: #ff4400;
        }

        .featured-article .article-info .desc {
            font-size: 13px;
            color: #6a6a6a;
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .featured-article .article-info .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: #a09080;
            border-top: 1px solid #f0ece8;
            padding-top: 10px;
            flex-shrink: 0;
        }

        .featured-article .article-info .meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .featured-article .article-info .meta .read-more {
            color: #ff4400;
            text-decoration: none;
            font-weight: 600;
            font-size: 12px;
            transition: color 0.3s ease;
        }

        .featured-article .article-info .meta .read-more:hover {
            color: #cc3700;
        }

        /* ===== 双栏布局 ===== */
        .main-layout {
            display: flex;
            gap: 32px;
            align-items: flex-start;
            margin: 30px 0;
        }

        .main-content {
            flex: 2.2;
            min-width: 0;
        }

        /* ===== 顶部广告位 ===== */
        .top-ad {
            background: #ffffff;
            border-radius: 24px;
            padding: 16px;
            margin-bottom: 24px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
            text-align: center;
            border: 3px solid #ff4400;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .top-ad:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(255, 68, 0, 0.2);
        }

        .top-ad img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            display: block;
        }

        /* ===== 热门文章列表 ===== */
        .articles-list {
            background: #ffffff;
            border-radius: 24px;
            padding: 36px 32px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.04);
            border: 1px solid #f0ece8;
        }

        .article-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid #f0ece8;
            transition: background 0.2s;
        }

        .article-item:last-child {
            border-bottom: none;
        }

        .article-item .item-index {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, #ff4400, #ff6a00);
            color: #fff;
            font-weight: 800;
            font-size: 14px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 2px;
            box-shadow: 0 2px 8px rgba(255, 68, 0, 0.3);
        }

        .article-item .item-content {
            flex: 1;
            min-width: 0;
        }

        .article-item .item-content .item-tag {
            display: inline-block;
            background: #fff0e8;
            color: #ff4400;
            font-size: 12px;
            font-weight: 700;
            padding: 0 14px;
            border-radius: 30px;
            margin-bottom: 4px;
        }

        .article-item .item-content h4 a {
            font-size: 17px;
            font-weight: 600;
            color: #1a1a1a;
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
        }

        .article-item .item-content h4 a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 3px;
            background: linear-gradient(90deg, #ff4400, #ff6a00);
            border-radius: 2px;
            transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .article-item .item-content h4 a:hover {
            color: #ff4400;
        }

        .article-item .item-content h4 a:hover::after {
            width: 100%;
        }

        .article-item .item-content .excerpt {
            font-size: 14px;
            color: #5a5a5a;
            margin-top: 4px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== 右侧边栏 ===== */
        .sidebar {
            flex: 1;
            min-width: 200px;
            max-width: 300px;
        }

        .sidebar-card {
            background: #ffffff;
            border-radius: 24px;
            padding: 24px 22px;
            margin-bottom: 24px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.04);
            border: 1px solid #f0ece8;
        }

        .sidebar-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: #1a1a1a;
            padding-bottom: 14px;
            border-bottom: 3px solid #ff4400;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card h4 .icon {
            color: #ff4400;
            font-size: 20px;
        }

        .sidebar-card ul {
            list-style: none;
        }

        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid #f4f0ec;
        }

        .sidebar-card ul li:last-child {
            border-bottom: none;
        }

        .sidebar-card ul li a {
            color: #2a2a2a;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
            display: block;
            line-height: 1.5;
            font-weight: 500;
        }

        .sidebar-card ul li a:hover {
            color: #ff4400;
        }

        .sidebar-card ul li .post-date {
            display: block;
            font-size: 12px;
            color: #a09080;
            margin-top: 2px;
        }

        /* ===== 侧边栏广告位 ===== */
        .sidebar-ad {
            background: #ffffff;
            border-radius: 24px;
            padding: 16px;
            margin-bottom: 24px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.04);
            text-align: center;
            border: 3px solid #ff4400;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            overflow: hidden;
        }

        .sidebar-ad:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(255, 68, 0, 0.2);
        }

        .sidebar-ad img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

        /* ===== 底部（淘宝橙红色主题） ===== */
        .footer {
            background: #1a1a1a;
            color: #b0a8a0;
            padding: 40px 0 30px;
            border-radius: 50px 50px 0 0;
            margin-top: 40px;
            border-top: 4px solid #ff4400;
        }

        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .footer-info {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }

        .footer-info span {
            font-size: 14px;
        }

        .footer-info .highlight {
            color: #ff6a00;
            font-weight: 600;
        }

        .footer-social a {
            color: #b0a8a0;
            margin-left: 24px;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
            font-weight: 500;
        }

        .footer-social a:hover {
            color: #ff6a00;
        }

        .footer-copy {
            text-align: center;
            font-size: 13px;
            color: #5a5a5a;
            border-top: 1px solid #2a2a2a;
            padding-top: 25px;
            margin-top: 25px;
        }

        .footer-copy a {
            color: #ff6a00;
            text-decoration: none;
            font-weight: 500;
        }

        .footer-copy a:hover {
            color: #ff8833;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .main-layout {
                flex-direction: column;
                align-items: center;
            }
            .sidebar {
                max-width: 100%;
                width: 100%;
            }
            .featured-articles {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-direction: column;
                gap: 12px;
            }
            .nav a {
                margin: 0 6px;
                font-size: 13px;
                padding: 6px 12px;
            }
            .logo h1 {
                font-size: 24px;
            }
            .hero h2 {
                font-size: 28px;
            }
            .hero {
                padding: 40px 0 30px;
                border-radius: 0 0 30px 30px;
            }
            .hero-btn {
                padding: 14px 32px;
                font-size: 16px;
            }
            .featured-articles {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .featured-article .article-img {
                height: 130px;
            }
            .featured-article .article-info h4 {
                font-size: 14px;
            }
            .articles-list {
                padding: 24px 18px;
            }
            .article-item {
                gap: 12px;
                padding: 14px 0;
            }
            .article-item .item-index {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }
            .article-item .item-content h4 a {
                font-size: 15px;
            }
            .article-item .item-content .excerpt {
                font-size: 13px;
                -webkit-line-clamp: 2;
            }
            .sidebar-card {
                padding: 18px 16px;
            }
            .sidebar-ad {
                padding: 12px;
            }
            .top-ad {
                padding: 12px;
            }
            .footer-inner {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }
            .footer-social a {
                margin: 0 12px;
            }
        }

        @media (max-width: 480px) {
            .featured-articles {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .featured-article .article-img {
                height: 110px;
            }
            .featured-article .article-info {
                padding: 10px 12px 12px;
            }
            .featured-article .article-info h4 {
                font-size: 13px;
            }
            .featured-article .article-info .desc {
                font-size: 12px;
                -webkit-line-clamp: 1;
            }
            .featured-article .article-info .meta {
                font-size: 11px;
                padding-top: 8px;
            }
            .featured-article .article-img .tag {
                font-size: 10px;
                padding: 2px 10px;
                top: 8px;
                left: 8px;
            }
            .article-item {
                flex-wrap: wrap;
            }
            .article-item .item-index {
                width: 24px;
                height: 24px;
                font-size: 11px;
            }
            .hero-btn {
                padding: 12px 24px;
                font-size: 14px;
                width: 90%;
            }
            .nav a {
                font-size: 12px;
                padding: 4px 8px;
                margin: 0 3px;
            }
            .hero h2 {
                font-size: 22px;
            }
            .section-title {
                font-size: 24px;
            }
        }