* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #e63946;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #b71c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
            color: #fff;
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f9d423, #ff4e50);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: transform 0.3s ease;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.85rem;
            font-weight: 400;
            -webkit-text-fill-color: #ccc;
            color: #ccc;
            letter-spacing: 0.3px;
            display: block;
            font-style: italic;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #ececec;
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 4px 0;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: #f9d423;
            transition: width 0.3s ease;
        }
        nav a:hover::after {
            width: 100%;
        }
        nav a:hover {
            color: #f9d423;
            text-decoration: none;
        }
        .breadcrumb {
            background: #eef0f5;
            padding: 12px 0;
            font-size: 0.9rem;
            color: #555;
            border-bottom: 1px solid #dce1e8;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #999;
        }
        .breadcrumb a {
            color: #2a3b5c;
        }
        .breadcrumb a:hover {
            color: #e63946;
        }
        .breadcrumb .active {
            color: #777;
            font-weight: 500;
        }
        .search-bar {
            display: flex;
            gap: 6px;
            max-width: 400px;
            margin: 30px auto 20px;
            background: #fff;
            border-radius: 60px;
            padding: 4px 4px 4px 20px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            border: 1px solid #e0e4ec;
        }
        .search-bar input {
            flex: 1;
            border: none;
            padding: 14px 0;
            font-size: 1rem;
            background: transparent;
            outline: none;
            color: #1a1a2e;
        }
        .search-bar input::placeholder {
            color: #999;
        }
        .search-bar button {
            background: #e63946;
            border: none;
            color: #fff;
            padding: 0 28px;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-bar button:hover {
            background: #b71c1c;
            transform: scale(1.02);
        }
        .search-bar button i {
            font-size: 1.1rem;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }
        @media(max-width:960px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #0f0c29, #302b63);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-body h2 {
            font-size: 2rem;
            margin: 48px 0 16px;
            padding-bottom: 8px;
            border-bottom: 4px solid #e63946;
            color: #0f0c29;
        }
        .article-body h3 {
            font-size: 1.55rem;
            margin: 36px 0 12px;
            color: #1c1a3a;
        }
        .article-body h4 {
            font-size: 1.2rem;
            margin: 24px 0 10px;
            color: #2a2a4a;
            font-weight: 700;
        }
        .article-body p {
            margin-bottom: 20px;
            color: #2d2d44;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 24px;
        }
        .article-body li {
            margin-bottom: 10px;
        }
        .article-body .highlight-box {
            background: linear-gradient(135deg, #fdfcfb, #e2d1c3);
            padding: 28px 32px;
            border-radius: 20px;
            border-left: 6px solid #e63946;
            margin: 32px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
        }
        .article-body .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .article-body .emoji-lg {
            font-size: 1.8rem;
            display: inline-block;
            margin-right: 6px;
        }
        .article-body strong {
            color: #0f0c29;
        }
        .article-body .img-wrapper {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
            background: #fff;
            padding: 12px;
        }
        .article-body .img-wrapper figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #666;
            padding: 12px 0 4px;
            font-style: italic;
        }
        .sidebar {
            background: #fff;
            border-radius: 20px;
            padding: 28px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef1f7;
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            margin-bottom: 16px;
            color: #0f0c29;
            border-left: 4px solid #e63946;
            padding-left: 14px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 10px;
        }
        .sidebar a {
            display: block;
            padding: 8px 12px;
            background: #f8f9fc;
            border-radius: 10px;
            transition: 0.2s;
            font-size: 0.95rem;
            border-left: 3px solid transparent;
        }
        .sidebar a:hover {
            background: #eef1f7;
            border-left-color: #e63946;
            text-decoration: none;
            transform: translateX(4px);
        }
        .feedback-section {
            margin-top: 60px;
            padding-top: 40px;
            border-top: 2px dashed #dce1e8;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        @media(max-width:700px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .card-form {
            background: #fff;
            padding: 28px 30px;
            border-radius: 20px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef1f7;
        }
        .card-form h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: #0f0c29;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-form label {
            font-weight: 600;
            font-size: 0.95rem;
            display: block;
            margin: 16px 0 6px;
            color: #1c1a3a;
        }
        .card-form input,
        .card-form textarea,
        .card-form select {
            width: 100%;
            padding: 14px 16px;
            border: 1px solid #dce1e8;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            background: #fafbfc;
            transition: 0.2s;
        }
        .card-form input:focus,
        .card-form textarea:focus,
        .card-form select:focus {
            border-color: #e63946;
            outline: none;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.12);
        }
        .card-form textarea {
            min-height: 110px;
            resize: vertical;
        }
        .card-form .btn-submit {
            background: #e63946;
            color: #fff;
            border: none;
            padding: 14px 32px;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: 0.25s;
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .card-form .btn-submit:hover {
            background: #b71c1c;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 8px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f9d423;
        }
        footer {
            background: #0f0c29;
            color: #ccc;
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media(max-width:700px) {
            footer .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        footer h4 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        footer a {
            color: #bbb;
            display: inline-block;
            margin-bottom: 6px;
        }
        footer a:hover {
            color: #f9d423;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 20px;
            padding: 4px 0;
        }
        .copyright {
            border-top: 1px solid #2a2a4a;
            margin-top: 32px;
            padding-top: 24px;
            text-align: center;
            font-size: 0.9rem;
            color: #888;
        }
        .last-update {
            display: inline-block;
            background: #eef0f5;
            padding: 6px 18px;
            border-radius: 60px;
            font-size: 0.85rem;
            color: #555;
            margin-bottom: 20px;
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 12px;
                padding: 20px 0 10px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 14px;
            }
            nav.show {
                display: flex;
            }
            .article-body h1 {
                font-size: 2rem;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .article-body h3 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            .header-inner {
                align-items: center;
            }
            .search-bar {
                flex-direction: column;
                border-radius: 20px;
                padding: 12px;
                background: #fff;
            }
            .search-bar input {
                padding: 12px 16px;
                border-radius: 40px;
                background: #f5f7fa;
            }
            .search-bar button {
                border-radius: 40px;
                padding: 12px 20px;
                justify-content: center;
            }
            .sidebar {
                position: static;
            }
        }
        @media(max-width:480px) {
            .container {
                padding: 0 14px;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .article-body .highlight-box {
                padding: 18px 20px;
            }
            .card-form {
                padding: 18px 16px;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #e63946;
            color: #fff;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.3);
            transition: 0.3s;
            opacity: 0;
            pointer-events: none;
            z-index: 999;
        }
        .scroll-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            background: #b71c1c;
            text-decoration: none;
            color: #fff;
        }