*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f8f9fc;
            color: #1a1f2e;
            line-height: 1.7;
            padding: 0 0 0 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #0047ab;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #e63946;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2e 0%, #1a2d47 100%);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            backdrop-filter: blur(6px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f9d423, #f7971e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: transform 0.25s ease;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #ccc;
            color: #ccc;
            display: block;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e8edf5;
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 215, 0, 0.15);
            color: #f9d423;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #f9d423;
            color: #0b1a2e;
        }
        .breadcrumb-wrap {
            background: #ecf0f5;
            padding: 10px 0;
            border-bottom: 1px solid #dce3ec;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: #3e4a5e;
        }
        .breadcrumb a {
            color: #0047ab;
        }
        .breadcrumb span.sep {
            color: #8f9bb3;
        }
        .breadcrumb .current {
            color: #1a1f2e;
            font-weight: 600;
        }
        .main-content {
            flex: 1;
            padding: 30px 0 50px;
        }
        .article h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 12px;
            color: #0b1a2e;
            letter-spacing: -0.02em;
        }
        .article h1 .highlight {
            background: linear-gradient(135deg, #f7971e, #f9d423);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article .subhead {
            font-size: 1.15rem;
            color: #3e4a5e;
            margin-bottom: 24px;
            border-left: 4px solid #f9d423;
            padding-left: 18px;
        }
        .article .meta-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 30px;
            font-size: 0.9rem;
            color: #5a687c;
            margin-bottom: 28px;
            padding-bottom: 18px;
            border-bottom: 1px solid #dce3ec;
        }
        .article .meta-bar i {
            margin-right: 6px;
            color: #f7971e;
        }
        .article h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 48px 0 16px;
            color: #0f2640;
            border-bottom: 3px solid #f0c929;
            padding-bottom: 8px;
        }
        .article h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: #1a2d47;
        }
        .article h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 24px 0 8px;
            color: #2c3f5c;
        }
        .article p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #1f2937;
        }
        .article p b,
        .article p strong {
            color: #0b1a2e;
        }
        .article ul,
        .article ol {
            margin: 16px 0 24px 24px;
        }
        .article li {
            margin-bottom: 10px;
            font-size: 1.02rem;
        }
        .article .card-box {
            background: #ffffff;
            border-radius: 16px;
            padding: 28px 30px;
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.04);
            margin: 32px 0;
            border: 1px solid #eaf0f6;
        }
        .article .card-box.insight {
            background: linear-gradient(145deg, #fef9e7, #fff8e1);
            border-left: 6px solid #f9d423;
        }
        .article .card-box.tip {
            background: #eaf6ff;
            border-left: 6px solid #0047ab;
        }
        .article .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 24px 0;
        }
        .article .stat-badge {
            display: inline-block;
            background: #0b1a2e;
            color: #f9d423;
            padding: 4px 16px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
        }
        .article .table-wrap {
            overflow-x: auto;
            margin: 28px 0;
            border-radius: 12px;
            border: 1px solid #dce3ec;
        }
        .article table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .article table th {
            background: #0b1a2e;
            color: #fff;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .article table td {
            padding: 12px 18px;
            border-bottom: 1px solid #e8edf5;
        }
        .article table tr:nth-child(even) {
            background: #f8f9fc;
        }
        .article table tr:hover {
            background: #fef5e7;
        }
        .article .img-wrapper {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            background: #eef2f7;
        }
        .article .img-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }
        .article .img-wrapper figcaption {
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #3e4a5e;
            background: #fff;
            font-style: italic;
            border-top: 1px solid #e8edf5;
        }
        .article .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 18px;
            margin: 20px 0;
            padding: 0;
            list-style: none;
        }
        .article .link-list-inline li a {
            background: #eef2f7;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: 0.2s;
        }
        .article .link-list-inline li a:hover {
            background: #f9d423;
            color: #0b1a2e;
            text-decoration: none;
        }
        .interactive-section {
            margin: 48px 0;
            padding: 36px 30px;
            background: #fff;
            border-radius: 20px;
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.04);
            border: 1px solid #eaf0f6;
        }
        .interactive-section h2 {
            margin-top: 0;
            border-bottom: none;
            padding-bottom: 0;
        }
        .interactive-section .section-desc {
            color: #4a5a72;
            margin-bottom: 20px;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 640px;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border-radius: 40px;
            border: 2px solid #dce3ec;
            font-size: 1rem;
            transition: 0.25s;
            background: #f8f9fc;
        }
        .search-form input:focus {
            outline: none;
            border-color: #f7971e;
            box-shadow: 0 0 0 4px rgba(247, 151, 30, 0.15);
        }
        .search-form button {
            padding: 14px 32px;
            border-radius: 40px;
            border: none;
            background: linear-gradient(135deg, #f7971e, #f9d423);
            color: #0b1a2e;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
        }
        .search-form button:hover {
            transform: scale(1.02);
            box-shadow: 0 4px 16px rgba(247, 151, 30, 0.35);
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 14px 18px;
            border-radius: 12px;
            border: 2px solid #dce3ec;
            font-size: 1rem;
            font-family: inherit;
            margin-bottom: 14px;
            transition: 0.25s;
            background: #f8f9fc;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            outline: none;
            border-color: #0047ab;
            box-shadow: 0 0 0 4px rgba(0, 71, 171, 0.08);
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-form .form-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 160px;
        }
        .comment-form .btn-primary {
            padding: 14px 36px;
            border-radius: 40px;
            border: none;
            background: #0b1a2e;
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
        }
        .comment-form .btn-primary:hover {
            background: #1a2d47;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(11, 26, 46, 0.2);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            color: #dce3ec;
            cursor: pointer;
            margin: 10px 0 20px;
            transition: 0.2s;
        }
        .rating-stars i.active {
            color: #f9d423;
            text-shadow: 0 0 10px rgba(249, 212, 35, 0.3);
        }
        .rating-stars i:hover,
        .rating-stars i.hover {
            color: #f9d423;
        }
        .site-footer {
            background: #0b1a2e;
            color: #c8d4e3;
            padding: 40px 0 24px;
            margin-top: 30px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 28px;
        }
        .site-footer h4 {
            color: #f9d423;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .site-footer a {
            color: #b0c4de;
            display: inline-block;
            margin-bottom: 6px;
        }
        .site-footer a:hover {
            color: #f9d423;
        }
        .site-footer .copyright {
            border-top: 1px solid #1f3450;
            padding-top: 20px;
            font-size: 0.85rem;
            text-align: center;
            color: #7a8aa3;
        }
        .site-footer .copyright a {
            color: #f9d423;
        }
        friend-link {
            display: block;
            margin: 16px 0 8px;
            font-size: 0.9rem;
        }
        friend-link a {
            margin-right: 16px;
            color: #b0c4de;
        }
        friend-link a:hover {
            color: #f9d423;
        }
        @media (max-width: 900px) {
            .article h1 {
                font-size: 2rem;
            }
            .article h2 {
                font-size: 1.6rem;
            }
            .article h3 {
                font-size: 1.3rem;
            }
            .article .grid-2 {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 12px;
                gap: 2px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 18px;
                border-radius: 8px;
                white-space: normal;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .article h1 {
                font-size: 1.7rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                gap: 4px 8px;
            }
            .interactive-section {
                padding: 24px 18px;
            }
            .search-form input {
                min-width: 140px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .article .meta-bar {
                flex-direction: column;
                gap: 6px;
            }
            .article .card-box {
                padding: 20px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article h1 {
                font-size: 1.4rem;
            }
            .article p {
                font-size: 0.98rem;
            }
            .article .table-wrap table {
                font-size: 0.8rem;
            }
            .article .table-wrap th,
            .article .table-wrap td {
                padding: 8px 10px;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }