*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fb;
            color: #1e2a3a;
            line-height: 1.7;
            font-size: 1.05rem;
        }
        a {
            color: #0a66c2;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e65c00;
            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(145deg, #0b1a2e, #1a2f44);
            color: #fff;
            padding: 18px 0 14px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px 20px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: linear-gradient(135deg, #f9d342, #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(249, 211, 66, 0.2);
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            display: block;
            -webkit-text-fill-color: #aac;
            color: #aac;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #f9d342;
            color: #f9d342;
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 18px;
        }
        nav a {
            color: #dce6f0;
            font-weight: 500;
            font-size: 0.98rem;
            padding: 6px 6px;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        nav a:hover {
            color: #f9d342;
            border-bottom-color: #f9d342;
            text-decoration: none;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 30px;
            padding: 2px 12px 2px 18px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-search input {
            background: transparent;
            border: none;
            color: #fff;
            padding: 8px 0;
            font-size: 0.9rem;
            min-width: 100px;
            outline: none;
        }
        .nav-search input::placeholder {
            color: #9aafc4;
        }
        .nav-search button {
            background: none;
            border: none;
            color: #f9d342;
            font-size: 1rem;
            cursor: pointer;
            padding: 6px;
        }
        .breadcrumb {
            background: #e9eef4;
            padding: 12px 0;
            font-size: 0.88rem;
            border-bottom: 1px solid #d5dee8;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #7a8b9f;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0a66c2;
        }
        .breadcrumb .current {
            color: #4a5a6a;
            font-weight: 500;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0 60px;
        }
        @media(max-width:920px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: #fff;
            border-radius: 20px;
            padding: 36px 32px;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.04);
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0b1a2e;
            margin-bottom: 0.3em;
        }
        h1 .highlight {
            background: linear-gradient(135deg, #f9d342, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 1.8em 0 0.6em;
            color: #0b1a2e;
            border-left: 6px solid #f9d342;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 1.4em 0 0.5em;
            color: #1a2f44;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1em 0 0.3em;
            color: #2c4058;
        }
        p {
            margin-bottom: 1.2em;
            color: #2a3a4e;
        }
        .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 28px;
            font-size: 0.92rem;
            color: #5e7287;
            margin: 8px 0 28px;
            padding-bottom: 18px;
            border-bottom: 1px solid #e5ecf3;
        }
        .meta i {
            margin-right: 6px;
            color: #f39c12;
        }
        .last-updated {
            font-weight: 600;
            color: #0a66c2;
        }
        .featured-image {
            margin: 24px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            background: #eef2f7;
        }
        .featured-image img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 12px 16px;
            font-size: 0.9rem;
            color: #4a5e72;
            background: #f4f8fc;
            font-style: italic;
        }
        .btn {
            display: inline-block;
            background: #0a66c2;
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            transition: 0.2s;
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            background: #e65c00;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(230, 92, 0, 0.25);
            text-decoration: none;
            color: #fff;
        }
        .btn-secondary {
            background: #1a2f44;
        }
        .btn-secondary:hover {
            background: #0b1a2e;
        }
        blockquote {
            border-left: 6px solid #f9d342;
            background: #f9fbfd;
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 16px 16px 0;
            font-style: italic;
            color: #1e3a5a;
        }
        blockquote strong {
            color: #0b1a2e;
        }
        ul,
        ol {
            margin: 0 0 1.4em 1.8em;
            color: #2a3a4e;
        }
        li {
            margin-bottom: 0.5em;
        }
        .tip-box {
            background: #eef7fa;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 24px 0;
            border-left: 8px solid #0a66c2;
        }
        .tip-box strong {
            color: #0a66c2;
        }
        .insight-box {
            background: #fef9e7;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 24px 0;
            border-left: 8px solid #f9d342;
        }
        .emoji-lg {
            font-size: 1.5rem;
            margin-right: 6px;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #f0f4fa;
            padding-bottom: 12px;
        }
        .sidebar-card ul {
            list-style: none;
            margin: 12px 0 0;
        }
        .sidebar-card li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f4fa;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            font-weight: 500;
        }
        .rating-widget {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin: 12px 0;
        }
        .stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
        }
        .stars i {
            transition: color 0.2s, transform 0.15s;
        }
        .stars i:hover,
        .stars i.active {
            color: #f9d342;
            transform: scale(1.2);
        }
        .stars i.selected {
            color: #f39c12;
        }
        .rating-value {
            font-weight: 700;
            font-size: 1.2rem;
            color: #0b1a2e;
        }
        .comment-form {
            background: #f8faff;
            border-radius: 16px;
            padding: 24px;
            margin: 32px 0 16px;
            border: 1px solid #e5ecf3;
        }
        .comment-form h3 {
            margin-top: 0;
        }
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #d5dee8;
            border-radius: 10px;
            font-size: 1rem;
            margin-bottom: 14px;
            font-family: inherit;
            transition: 0.2s;
            background: #fff;
        }
        .comment-form input:focus,
        .comment-form textarea:focus {
            border-color: #0a66c2;
            outline: none;
            box-shadow: 0 0 0 4px rgba(10, 102, 194, 0.1);
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-form .btn {
            width: 100%;
            font-size: 1.1rem;
        }
        footer {
            background: #0b1a2e;
            color: #b8c9dd;
            padding: 40px 0 30px;
            margin-top: 40px;
        }
        footer a {
            color: #b8c9dd;
        }
        footer a:hover {
            color: #f9d342;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 28px;
        }
        .footer-grid h4 {
            color: #f9d342;
            margin-bottom: 14px;
            font-size: 1.1rem;
        }
        .footer-grid ul {
            list-style: none;
            margin: 0;
        }
        .footer-grid li {
            padding: 4px 0;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            padding: 18px 20px;
            margin: 12px 0 20px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 0;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            font-size: 0.88rem;
            text-align: center;
            color: #7a8fa3;
        }
        .copyright strong {
            color: #c8dae8;
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #0b1a2e;
                padding: 18px 16px;
                border-radius: 16px;
                margin-top: 10px;
                gap: 6px;
                border: 1px solid rgba(255, 255, 255, 0.06);
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 6px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-search {
                margin-top: 8px;
                background: rgba(255, 255, 255, 0.05);
            }
            .nav-search input {
                width: 100%;
            }
            .header-inner {
                align-items: center;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            article {
                padding: 20px 16px;
            }
            .main-grid {
                padding: 20px 0 30px;
                gap: 24px;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
                gap: 4px 8px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        @media(max-width:480px) {
            .container {
                padding: 0 12px;
            }
            article {
                padding: 16px 12px;
                border-radius: 12px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.25rem;
                padding-left: 12px;
            }
            .meta {
                font-size: 0.82rem;
                gap: 6px 16px;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 20px;
        }
        .mb-2 {
            margin-bottom: 20px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .gap-small {
            gap: 8px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.96rem;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #e5ecf3;
        }
        th {
            background: #f0f6fd;
            font-weight: 600;
            color: #0b1a2e;
        }
        tr:hover td {
            background: #f8faff;
        }