*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f7f4f0;
            color: #2c2c2c;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #8b2f97;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #5a1d63;
            text-decoration: underline;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #1a1a2e;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.5rem;
            margin-bottom: 0.6rem;
            border-bottom: 3px solid #d4a0d9;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 1.8rem;
            margin-bottom: 0.4rem;
            color: #3d2b4a;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
            color: #4e3a5e;
        }
        p {
            margin-bottom: 1rem;
        }
        ul,
        ol {
            margin-bottom: 1rem;
            padding-left: 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        strong {
            color: #1a1a2e;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #1a1a2e 0%, #2d1b3a 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.20);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f0d4f5;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: opacity 0.2s;
        }
        .my-logo i {
            color: #d4a0d9;
            font-size: 1.6rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
            color: #f0d4f5;
        }
        .my-logo span {
            font-weight: 300;
            color: #c084c9;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #d4a0d9;
            color: #f0d4f5;
            font-size: 1.5rem;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(212, 160, 217, 0.15);
        }
        .main-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e8d6ed;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: #d4a0d9;
            color: #1a1a2e;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #d4a0d9;
            color: #1a1a2e;
        }
        .breadcrumb-wrap {
            background: #ede7e1;
            padding: 0.5rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d9cec4;
        }
        .breadcrumb-wrap ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-wrap li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #8b6f7e;
        }
        .breadcrumb-wrap a {
            color: #6b4f7a;
        }
        .breadcrumb-wrap a:hover {
            color: #8b2f97;
        }
        .breadcrumb-wrap .current {
            color: #3d2b4a;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #f2eaf5, #e3d3ea);
            padding: 2.8rem 0 2.2rem;
            text-align: center;
            border-bottom: 4px solid #d4a0d9;
        }
        .hero h1 {
            font-size: 2.6rem;
            color: #1a1a2e;
        }
        .hero h1 i {
            color: #8b2f97;
            margin-right: 0.3rem;
        }
        .hero p {
            font-size: 1.2rem;
            color: #3d2b4a;
            max-width: 760px;
            margin: 0.5rem auto 0;
        }
        .hero .last-updated {
            display: inline-block;
            margin-top: 1rem;
            background: #1a1a2e;
            color: #f0d4f5;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 500;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        .main-column {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 80px;
            align-self: start;
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 1.2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #e4d6e8;
        }
        .sidebar h3 {
            margin-top: 0;
            font-size: 1.2rem;
            border-bottom: 2px solid #d4a0d9;
            padding-bottom: 0.4rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .sidebar li {
            margin-bottom: 0.6rem;
        }
        .sidebar a {
            display: block;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
            font-size: 0.92rem;
        }
        .sidebar a:hover {
            background: #f2eaf5;
            text-decoration: none;
        }
        .feature-img-wrap {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            background: #e3d3ea;
        }
        .feature-img-wrap img {
            width: 100%;
            display: block;
        }
        .feature-img-wrap figcaption {
            padding: 0.6rem 1rem;
            background: #f2eaf5;
            font-size: 0.85rem;
            color: #4e3a5e;
            font-style: italic;
        }
        .search-block {
            background: #fff;
            border-radius: 14px;
            padding: 1.5rem 1.8rem;
            margin: 2rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #e4d6e8;
        }
        .search-block h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
            margin-top: 0.6rem;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd2e2;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.3s;
            background: #faf8f6;
        }
        .search-form input[type="text"]:focus {
            border-color: #8b2f97;
        }
        .search-form button {
            background: #8b2f97;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #5a1d63;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.2rem 0;
        }
        .feedback-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 1.8rem;
            box-shadow: 0 2px 14px rgba(0, 0, 0, 0.04);
            border: 1px solid #e4d6e8;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.2rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.6rem;
        }
        .feedback-card textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd2e2;
            border-radius: 12px;
            font-size: 0.92rem;
            font-family: inherit;
            resize: vertical;
            min-height: 90px;
            outline: none;
            transition: border-color 0.3s;
            background: #faf8f6;
        }
        .feedback-card textarea:focus {
            border-color: #8b2f97;
        }
        .feedback-card input[type="text"],
        .feedback-card input[type="number"] {
            padding: 0.6rem 1rem;
            border: 2px solid #ddd2e2;
            border-radius: 30px;
            font-size: 0.92rem;
            outline: none;
            transition: border-color 0.3s;
            background: #faf8f6;
        }
        .feedback-card input:focus {
            border-color: #8b2f97;
        }
        .feedback-card .row {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .feedback-card .row label {
            font-weight: 600;
            min-width: 70px;
        }
        .feedback-card button {
            background: #8b2f97;
            color: #fff;
            border: none;
            padding: 0.65rem 1.8rem;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #5a1d63;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.4rem;
            color: #e0c7a8;
            cursor: pointer;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f5b342;
            transform: scale(1.1);
        }
        .topic-links {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 1.8rem;
            margin: 2rem 0;
            border: 1px solid #e4d6e8;
        }
        .topic-links h3 {
            margin-top: 0;
        }
        .topic-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 0.4rem 1.2rem;
            list-style: none;
            padding: 0;
        }
        .topic-links li {
            margin-bottom: 0.2rem;
        }
        .topic-links a {
            display: inline-block;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .topic-links a:hover {
            background: #f2eaf5;
            text-decoration: none;
        }
        .site-footer {
            background: #1a1a2e;
            color: #cbb8d3;
            padding: 2.2rem 0 1.8rem;
            margin-top: 3rem;
            border-top: 4px solid #d4a0d9;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .site-footer a {
            color: #d4a0d9;
        }
        .site-footer a:hover {
            color: #f0d4f5;
            text-decoration: underline;
        }
        .footer-copy {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 1.2rem;
            border-top: 1px solid #2d2d4a;
            font-size: 0.85rem;
            color: #9a87a5;
        }
        friend-link {
            display: block;
            margin-bottom: 0.6rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.3rem;
        }
        @media (max-width: 820px) {
            .content-wrap {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
                margin-top: 2rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(26, 26, 46, 0.97);
                padding: 0.8rem 0 1.2rem;
                border-radius: 0 0 16px 16px;
                margin-top: 0.6rem;
                gap: 0.1rem;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 1.2rem;
                border-radius: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                align-items: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .topic-links ul {
                grid-template-columns: 1fr;
            }
            .feedback-card {
                padding: 1.2rem;
            }
        }
        .highlight-box {
            background: #f2eaf5;
            border-left: 5px solid #8b2f97;
            padding: 1rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .emoji-lg {
            font-size: 1.3rem;
        }
        .badge {
            display: inline-block;
            background: #d4a0d9;
            color: #1a1a2e;
            padding: 0.15rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .two-col-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.4rem 1.8rem;
        }
        @media (max-width: 600px) {
            .two-col-list {
                grid-template-columns: 1fr;
            }
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.6rem 1rem;
            text-align: left;
            border-bottom: 1px solid #ede7e1;
        }
        th {
            background: #1a1a2e;
            color: #f0d4f5;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .toc {
            background: #fff;
            border-radius: 14px;
            padding: 1.2rem 1.8rem;
            border: 1px solid #e4d6e8;
            margin: 1.8rem 0;
        }
        .toc ol {
            padding-left: 1.4rem;
            margin-bottom: 0;
        }
        .toc li {
            margin-bottom: 0.3rem;
        }
        .toc a {
            font-weight: 500;
        }