* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #6b3fa0;
            --primary-light: #9b6fd4;
            --secondary: #f6931e;
            --accent: #e84393;
            --bg: #faf8f5;
            --bg-card: #ffffff;
            --text: #2d2d2d;
            --text-light: #6a6a6a;
            --border: #e6e1dc;
            --success: #27ae60;
            --shadow: 0 8px 32px rgba(107, 63, 160, 0.10);
            --radius: 16px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .site-header {
            background: linear-gradient(135deg, #4a2c6e 0%, #6b3fa0 40%, #8e5fc7 100%);
            padding: 0 20px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            max-width: 1320px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .my-logo:hover {
            color: #ffe082;
        }
        .my-logo span {
            font-weight: 300;
            color: #d4b8ff;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }
        .nav-list li a {
            color: #f0e8ff;
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
        }
        .nav-list li a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.nav-list {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: 70px;
            left: 0;
            right: 0;
            background: #4a2c6e;
            padding: 20px 24px;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
            gap: 4px;
        }
        #nav-toggle:checked~.nav-list li a {
            display: block;
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .breadcrumb-wrap {
            max-width: 1320px;
            margin: 0 auto;
            padding: 12px 20px 0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.6);
            padding: 8px 18px;
            border-radius: 40px;
            backdrop-filter: blur(4px);
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #bbb;
            font-size: 1.1rem;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 20px 20px 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 36px 48px;
            box-shadow: var(--shadow);
        }
        @media (max-width: 600px) {
            .article-main {
                padding: 20px 16px 32px;
            }
        }
        .article-main h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            color: #2d1b4e;
            margin-bottom: 12px;
            font-weight: 800;
        }
        .article-main h1 i {
            color: var(--secondary);
        }
        .article-main .sub-meta {
            color: var(--text-light);
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            padding-bottom: 20px;
            border-bottom: 2px solid var(--border);
            margin-bottom: 28px;
        }
        .article-main .sub-meta i {
            margin-right: 6px;
            color: var(--primary-light);
        }
        .article-main .last-updated {
            font-weight: 600;
            color: var(--primary);
        }
        .article-main h2 {
            font-size: 2.0rem;
            margin-top: 48px;
            margin-bottom: 18px;
            color: #2d1b4e;
            border-left: 6px solid var(--secondary);
            padding-left: 18px;
        }
        .article-main h3 {
            font-size: 1.5rem;
            margin-top: 36px;
            margin-bottom: 14px;
            color: #3d2866;
        }
        .article-main h4 {
            font-size: 1.2rem;
            margin-top: 26px;
            margin-bottom: 10px;
            color: #4a2c6e;
            font-weight: 600;
        }
        .article-main p {
            margin-bottom: 18px;
            font-size: 1.05rem;
        }
        .article-main ul,
        .article-main ol {
            margin: 12px 0 24px 24px;
        }
        .article-main li {
            margin-bottom: 10px;
            font-size: 1.02rem;
        }
        .article-main strong {
            color: #2d1b4e;
        }
        .article-main .highlight-box {
            background: #f3edfc;
            border-left: 5px solid var(--primary);
            padding: 18px 24px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .article-main .highlight-box i {
            color: var(--primary);
            margin-right: 8px;
        }
        .article-main .emoji-lg {
            font-size: 1.4rem;
            margin-right: 4px;
        }
        .article-main .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        .article-main table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.98rem;
        }
        .article-main table th {
            background: #4a2c6e;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
        }
        .article-main table td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border);
        }
        .article-main table tr:nth-child(even) {
            background: #f9f6fe;
        }
        .featured-img {
            margin: 28px 0;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }
        .featured-img figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 8px;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            color: #2d1b4e;
            margin-bottom: 16px;
            border-bottom: 2px solid var(--border);
            padding-bottom: 10px;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f0ecf5;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card ul li a i {
            color: var(--secondary);
            width: 18px;
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0 24px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #4a2c6e;
        }
        .feedback-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 3px solid var(--border);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        @media (max-width: 680px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #f9f6fe;
            border-radius: var(--radius);
            padding: 24px;
        }
        .feedback-card h3 {
            margin-top: 0;
            margin-bottom: 16px;
            font-size: 1.3rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feedback-card form input,
        .feedback-card form textarea {
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-family: var(--font);
            font-size: 0.98rem;
            outline: none;
            transition: border 0.2s;
        }
        .feedback-card form input:focus,
        .feedback-card form textarea:focus {
            border-color: var(--primary);
        }
        .feedback-card form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card form button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 20px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .feedback-card form button:hover {
            background: #4a2c6e;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f6931e;
        }
        .site-footer {
            background: #1f1235;
            color: #d4c8e8;
            padding: 40px 20px 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1320px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media (max-width: 720px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .footer-inner p,
        .footer-inner li {
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .footer-inner ul {
            list-style: none;
        }
        .footer-inner ul li {
            padding: 4px 0;
        }
        .footer-inner ul li a {
            color: #c4b0e0;
        }
        .footer-inner ul li a:hover {
            color: var(--secondary);
        }
        friend-link {
            display: block;
            margin-top: 12px;
            padding: 14px 18px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #e0d0f0;
            margin: 0 6px;
        }
        friend-link a:hover {
            color: var(--secondary);
        }
        .copyright {
            max-width: 1320px;
            margin: 30px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.9rem;
            color: #a898c0;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                width: 100%;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .article-main h1 {
                font-size: 1.8rem;
            }
            .article-main h2 {
                font-size: 1.5rem;
            }
            .article-main h3 {
                font-size: 1.2rem;
            }
            .article-main {
                padding: 20px 14px 28px;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 6px 12px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .search-form {
                flex-direction: column;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 480px) {
            .article-main h1 {
                font-size: 1.5rem;
            }
            .article-main .sub-meta {
                flex-direction: column;
                gap: 6px;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .star-rating label {
                font-size: 1.6rem;
            }
        }
        .btn-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary);
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(107, 63, 160, 0.3);
            z-index: 999;
            transition: transform 0.2s;
        }
        .btn-top:hover {
            transform: scale(1.08);
            background: #4a2c6e;
        }
        @media (max-width: 600px) {
            .btn-top {
                width: 40px;
                height: 40px;
                font-size: 1rem;
                bottom: 16px;
                right: 16px;
            }
        }