*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #1e1e2a;
            background: #f8f9fc;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0057b3;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003d7a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.75rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #12121c;
            margin-top: 1.8rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.2rem;
            border-bottom: 4px solid #f5a623;
            padding-bottom: 0.6rem;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 5px solid #f5a623;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #2a2a3e;
        }
        h4 {
            font-size: 1.1rem;
            color: #3a3a52;
        }
        p {
            margin-bottom: 1.1rem;
            color: #2c2c3a;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b0b1a 0%, #1a1a35 100%);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #f5a623;
            letter-spacing: 1px;
            text-transform: uppercase;
            background: linear-gradient(45deg, #f5a623, #ff6b35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 20px rgba(245, 166, 35, 0.15);
            transition: transform 0.25s ease;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #aaa;
            color: #aaa;
            letter-spacing: 2px;
            font-weight: 300;
            text-transform: none;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .nav-bar a {
            color: #e0e0f0;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-bar a:hover {
            background: rgba(245, 166, 35, 0.15);
            color: #f5a623;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #f0f0ff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        #nav-toggle {
            display: none;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-bar {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #12122a;
                padding: 0.8rem;
                border-radius: 12px;
                margin-top: 0.5rem;
                gap: 0.3rem;
            }
            .nav-bar a {
                padding: 0.7rem 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            #nav-toggle:checked~.nav-bar {
                display: flex;
            }
        }
        .breadcrumb {
            background: #eef0f7;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dde0ea;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.4rem;
            color: #888;
        }
        .breadcrumb a {
            color: #0057b3;
        }
        .breadcrumb .current {
            color: #444;
            font-weight: 500;
        }
        .content-area {
            background: #ffffff;
            padding: 2.2rem 0 3rem;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.04);
        }
        .content-area article {
            max-width: 860px;
            margin: 0 auto;
        }
        .content-area .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            font-size: 0.92rem;
            color: #666;
            padding: 0.6rem 0 1.4rem;
            border-bottom: 1px dashed #dde0ea;
            margin-bottom: 1.8rem;
        }
        .content-area .meta-info i {
            margin-right: 0.4rem;
            color: #f5a623;
        }
        .last-updated {
            font-weight: 600;
            color: #2a2a3e;
        }
        .featured-image {
            margin: 1.8rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.8rem 1.2rem;
            background: #f4f5fa;
            font-size: 0.9rem;
            color: #555;
            font-style: italic;
        }
        .highlight {
            background: #fef7e0;
            padding: 0.15rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-lg {
            font-size: 1.6rem;
            margin-right: 0.3rem;
        }
        .tip-box {
            background: #e8f4f8;
            border-left: 5px solid #17a2b8;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .tip-box strong {
            color: #0c6b7a;
        }
        .warning-box {
            background: #fef3e9;
            border-left: 5px solid #e67e22;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .related-links {
            background: #f4f6fc;
            border-radius: 14px;
            padding: 1.2rem 1.8rem;
            margin: 2rem 0;
            border: 1px solid #e2e6f0;
        }
        .related-links h4 {
            margin-top: 0;
            color: #0b0b1a;
        }
        .related-links ul {
            columns: 2 240px;
            list-style: none;
            padding: 0;
            margin: 0.6rem 0 0;
        }
        .related-links li {
            padding: 0.3rem 0;
        }
        .related-links a {
            font-weight: 500;
        }
        @media (max-width: 600px) {
            .related-links ul {
                columns: 1;
            }
        }
        .search-section {
            background: #f0f2f8;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 2.4rem 0;
            border: 1px solid #dde0ea;
        }
        .search-section form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .search-section input[type="text"] {
            flex: 1;
            min-width: 160px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #d0d4e0;
            border-radius: 10px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-section input[type="text"]:focus {
            border-color: #f5a623;
        }
        .search-section button {
            background: #f5a623;
            border: none;
            color: #1a1a2a;
            padding: 0.8rem 1.8rem;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .search-section button:hover {
            background: #e6951f;
            transform: translateY(-1px);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.6rem;
            margin: 2.4rem 0;
        }
        @media (max-width: 640px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #f8f9fe;
            border-radius: 16px;
            padding: 1.5rem 1.8rem;
            border: 1px solid #e4e7f0;
        }
        .feedback-card h4 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .feedback-card textarea,
        .feedback-card input,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 2px solid #d0d4e0;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
            background: #fff;
            width: 100%;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus,
        .feedback-card select:focus {
            border-color: #f5a623;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: #1a1a35;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #2a2a4e;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5a623;
        }
        .site-footer {
            background: #0b0b1a;
            color: #c0c0d8;
            padding: 2.5rem 0 1.8rem;
            margin-top: 2rem;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 600px) {
            .site-footer .container {
                grid-template-columns: 1fr;
            }
        }
        .site-footer h4 {
            color: #f5a623;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .site-footer a {
            color: #aab0d0;
        }
        .site-footer a:hover {
            color: #f5a623;
        }
        friend-link {
            display: block;
            margin: 0.6rem 0;
        }
        friend-link a {
            display: inline-block;
            padding: 0.2rem 0;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #2a2a4a;
            padding-top: 1.2rem;
            margin-top: 0.8rem;
            text-align: center;
            font-size: 0.88rem;
            color: #8888aa;
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
            .content-area {
                padding: 1.2rem 0 2rem;
            }
            .container {
                padding: 0 0.8rem;
            }
            .search-section {
                padding: 1rem 1.2rem;
            }
            .feedback-card {
                padding: 1rem 1.2rem;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #f5a623;
            color: #1a1a2a;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
            transition: transform 0.2s, background 0.2s;
            border: none;
            cursor: pointer;
            z-index: 999;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            background: #ffb84d;
        }
        @media (max-width: 480px) {
            .scroll-top {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
                bottom: 1rem;
                right: 1rem;
            }
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #1a1a35;
            color: #fff;
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e4e7f0;
            background: #fafbff;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #f4f6fc;
        }
        blockquote {
            border-left: 4px solid #f5a623;
            background: #f7f8fd;
            padding: 1rem 1.6rem;
            margin: 1.6rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #3a3a52;
        }
        blockquote cite {
            display: block;
            margin-top: 0.6rem;
            font-style: normal;
            font-weight: 600;
            color: #1a1a35;
        }
        .accordion {
            margin: 1.2rem 0;
        }
        .accordion details {
            background: #f4f6fc;
            border-radius: 10px;
            margin-bottom: 0.6rem;
            border: 1px solid #e2e6f0;
            overflow: hidden;
        }
        .accordion summary {
            padding: 0.9rem 1.4rem;
            font-weight: 600;
            cursor: pointer;
            background: #eef0f7;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .accordion summary:hover {
            background: #e4e7f0;
        }
        .accordion details[open] summary {
            background: #f5a623;
            color: #1a1a2a;
        }
        .accordion .acc-content {
            padding: 1rem 1.4rem;
        }