*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fb;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003580;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b0b2b 0%, #1a1a4e 100%);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-decoration: none;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: opacity .2s;
        }
        .my-logo:hover {
            opacity: .85;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #fff;
            margin-right: 6px;
            background: none;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list {
            list-style: none;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-list li a {
            color: #e0e0ff;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: .92rem;
            font-weight: 500;
            transition: all .2s;
            display: inline-block;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            text-decoration: none;
        }
        .nav-list li a.active {
            background: rgba(255, 215, 0, .18);
            color: #ffd700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background .2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, .1);
        }
        .breadcrumb-wrap {
            background: #eef0f5;
            padding: 10px 0;
            border-bottom: 1px solid #dce0e8;
        }
        .breadcrumb {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 4px;
            font-size: .85rem;
        }
        .breadcrumb li+li::before {
            content: "/";
            margin-right: 6px;
            color: #888;
        }
        .breadcrumb a {
            color: #2c3e50;
        }
        .breadcrumb .current {
            color: #6c757d;
            font-weight: 500;
        }
        main {
            padding: 30px 0 50px;
        }
        .article-body h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: .4rem;
            color: #0b0b2b;
        }
        .article-body .subhead {
            font-size: 1.15rem;
            color: #4a4a6a;
            margin-bottom: 1.8rem;
            border-left: 4px solid #f7971e;
            padding-left: 18px;
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            color: #1a1a4e;
            border-bottom: 3px solid #ffd700;
            padding-bottom: 6px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: .8rem;
            color: #2d2d5e;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: .5rem;
            color: #3a3a6e;
        }
        .article-body p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #22223a;
        }
        .article-body strong {
            color: #0b0b2b;
        }
        .article-body em {
            font-style: italic;
            color: #3a3a6e;
        }
        .article-body ul,
        .article-body ol {
            margin: 1rem 0 1.5rem 1.8rem;
        }
        .article-body li {
            margin-bottom: .5rem;
            font-size: 1.02rem;
        }
        .feature-box {
            background: #f0f4ff;
            border-left: 5px solid #f7971e;
            padding: 20px 28px;
            border-radius: 0 12px 12px 0;
            margin: 1.8rem 0;
        }
        .feature-box p:last-child {
            margin-bottom: 0;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, .12);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #fff;
            padding: 10px 18px;
            font-size: .85rem;
            color: #555;
            border-top: 1px solid #e8e8f0;
        }
        .last-updated {
            display: inline-block;
            background: #eef0f5;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: .82rem;
            color: #4a4a6a;
            margin-bottom: 1.2rem;
            border: 1px solid #dce0e8;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .search-section {
            background: #fff;
            border-radius: 16px;
            padding: 30px 28px;
            margin: 2.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .06);
            border: 1px solid #e8ecf4;
        }
        .search-section h3 {
            margin-top: 0;
            font-size: 1.4rem;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid #dce0e8;
            border-radius: 50px;
            font-size: 1rem;
            transition: border .2s;
            outline: none;
            background: #fafbff;
        }
        .search-form input[type="text"]:focus {
            border-color: #f7971e;
        }
        .search-form button {
            padding: 14px 32px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            border: none;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            color: #0b0b2b;
            cursor: pointer;
            transition: transform .2s, box-shadow .2s;
            box-shadow: 0 4px 14px rgba(247, 151, 30, .35);
        }
        .search-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(247, 151, 30, .4);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 2.5rem 0;
        }
        .interaction-card {
            background: #fff;
            border-radius: 16px;
            padding: 28px 26px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .06);
            border: 1px solid #e8ecf4;
        }
        .interaction-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card form {
            margin-top: 14px;
        }
        .interaction-card label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: .9rem;
            color: #2d2d5e;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce0e8;
            border-radius: 12px;
            font-size: .95rem;
            margin-bottom: 14px;
            transition: border .2s;
            outline: none;
            background: #fafbff;
            font-family: inherit;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            border-color: #f7971e;
        }
        .interaction-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .interaction-card .btn-submit {
            padding: 12px 30px;
            background: #1a1a4e;
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            transition: background .2s, transform .2s;
        }
        .interaction-card .btn-submit:hover {
            background: #0b0b2b;
            transform: translateY(-2px);
        }
        .score-stars {
            display: flex;
            gap: 8px;
            font-size: 1.8rem;
            color: #ffd700;
            margin-bottom: 14px;
            cursor: pointer;
        }
        .score-stars i {
            transition: transform .15s;
        }
        .score-stars i:hover {
            transform: scale(1.2);
        }
        .related-inline {
            background: #f8faff;
            border-radius: 14px;
            padding: 20px 26px;
            margin: 2rem 0;
            border: 1px solid #dce4f0;
        }
        .related-inline h4 {
            margin-top: 0;
        }
        .related-inline ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
        }
        .related-inline li a {
            font-weight: 500;
        }
        .site-footer {
            background: #0b0b2b;
            color: #c8c8e8;
            padding: 40px 0 30px;
            margin-top: 50px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        .footer-inner h4 {
            color: #ffd700;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .footer-inner a {
            color: #aab0e0;
        }
        .footer-inner a:hover {
            color: #fff;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 6px;
        }
        friend-link {
            display: block;
            background: #12123a;
            padding: 20px 24px;
            border-radius: 14px;
            margin: 20px 0 10px;
            border: 1px solid #2a2a5e;
        }
        friend-link h4 {
            color: #ffd700;
            margin-bottom: 12px;
            font-size: 1.05rem;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 20px;
            padding: 0;
            margin: 0;
        }
        friend-link a {
            color: #aab0e0;
            font-size: .9rem;
        }
        friend-link a:hover {
            color: #fff;
        }
        .copyright {
            text-align: center;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid #2a2a5e;
            font-size: .85rem;
            color: #8888aa;
        }
        @media (max-width: 880px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .article-body h1 {
                font-size: 2rem;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 720px) {
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #12123a;
                padding: 12px 0;
                border-radius: 12px;
                margin-top: 8px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 10px 20px;
                border-radius: 0;
            }
            .header-inner {
                align-items: center;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .search-form input[type="text"] {
                min-width: 140px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .article-body h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .interaction-card {
                padding: 18px 16px;
            }
            .search-section {
                padding: 20px 16px;
            }
        }
        .text-muted {
            color: #6c757d;
        }
        .mt-1 {
            margin-top: .5rem;
        }
        .mb-1 {
            margin-bottom: .5rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .gap-1 {
            gap: 12px;
        }
        .fw-700 {
            font-weight: 700;
        }
        .star-rating-input {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            font-size: 1.6rem;
            margin-bottom: 12px;
        }
        .star-rating-input input {
            display: none;
        }
        .star-rating-input label {
            cursor: pointer;
            color: #ddd;
            transition: color .2s, transform .15s;
        }
        .star-rating-input label:hover,
        .star-rating-input label:hover~label,
        .star-rating-input input:checked~label {
            color: #ffd700;
        }
        .star-rating-input label:hover {
            transform: scale(1.15);
        }