*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fa;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0056b3;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003580;
            text-decoration: underline;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2e, #1a2f44);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7d94e, #f0a030);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(247, 217, 78, 0.25);
            transition: transform 0.25s ease;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f7d94e;
            margin-right: 6px;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .nav-bar a {
            color: #e6edf5;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 30px;
            transition: background 0.2s, color 0.2s;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .nav-bar a:hover {
            background: rgba(247, 217, 78, 0.18);
            color: #f7d94e;
            text-decoration: none;
        }
        .nav-bar a.active {
            background: #f7d94e;
            color: #0b1a2e;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #f7d94e;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 8px;
            transition: transform 0.2s;
        }
        .hamburger:hover {
            transform: scale(1.1);
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 10px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dde4ea;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #6c7a8a;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2c5f7a;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0b1a2e;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .article-body h1 i {
            color: #f0a030;
            margin-right: 12px;
        }
        .article-body h2 {
            font-size: 1.9rem;
            margin-top: 48px;
            margin-bottom: 18px;
            color: #1a2f44;
            border-left: 6px solid #f7d94e;
            padding-left: 18px;
            font-weight: 700;
        }
        .article-body h3 {
            font-size: 1.45rem;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #2a4058;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.15rem;
            margin-top: 22px;
            margin-bottom: 8px;
            color: #3a5068;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2a3a4a;
        }
        .article-body strong {
            color: #0b1a2e;
            font-weight: 700;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }
        .article-body .highlight-box {
            background: #f0f4fa;
            border-left: 5px solid #f7d94e;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 28px 0;
        }
        .article-body .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .article-image {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            background: #eef2f6;
            padding: 8px;
        }
        .article-image img {
            border-radius: 12px;
            width: 100%;
            background: #dce3ec;
        }
        .article-image figcaption {
            padding: 12px 16px 4px;
            font-size: 0.92rem;
            color: #4a5a6a;
            font-style: italic;
        }
        .sidebar {
            background: #f1f4f9;
            border-radius: 20px;
            padding: 24px 22px;
            position: sticky;
            top: 100px;
            align-self: start;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .sidebar h3 {
            font-size: 1.3rem;
            margin-bottom: 18px;
            color: #0b1a2e;
            border-bottom: 3px solid #f7d94e;
            padding-bottom: 10px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar li {
            margin-bottom: 10px;
        }
        .sidebar a {
            display: block;
            padding: 8px 14px;
            background: #fff;
            border-radius: 10px;
            transition: all 0.2s;
            font-weight: 500;
            color: #1a2f44;
            border-left: 3px solid transparent;
        }
        .sidebar a:hover {
            background: #e6edf5;
            border-left-color: #f7d94e;
            text-decoration: none;
            transform: translateX(4px);
        }
        .interaction-section {
            margin-top: 48px;
            padding-top: 36px;
            border-top: 2px solid #dde4ea;
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        @media (max-width: 700px) {
            .interaction-section {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        .interaction-card {
            background: #f4f7fb;
            border-radius: 18px;
            padding: 24px 22px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .interaction-card h3 {
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #0b1a2e;
        }
        .interaction-card h3 i {
            color: #f0a030;
        }
        .interaction-card input,
        .interaction-card textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #ccd7e4;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fff;
            margin-bottom: 14px;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus {
            outline: none;
            border-color: #f0a030;
            box-shadow: 0 0 0 3px rgba(240, 160, 48, 0.15);
        }
        .interaction-card textarea {
            resize: vertical;
            min-height: 80px;
        }
        .interaction-card button {
            background: #1a2f44;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .interaction-card button:hover {
            background: #0b1a2e;
            transform: scale(1.02);
        }
        .interaction-card button i {
            color: #f7d94e;
        }
        .star-rating {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            color: #d0d8e2;
            cursor: pointer;
            margin: 8px 0 16px;
            transition: color 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f7b731;
        }
        .star-rating i {
            transition: color 0.15s, transform 0.15s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .site-footer {
            background: #0b1a2e;
            color: #cbd8e8;
            padding: 40px 0 28px;
            margin-top: 40px;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 32px;
        }
        .footer-links a {
            color: #b0c8dd;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #f7d94e;
            text-decoration: none;
        }
        friend-link {
            display: block;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #2a4058;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #b0c8dd;
            margin: 0 8px 0 4px;
        }
        friend-link a:hover {
            color: #f7d94e;
        }
        .copyright {
            margin-top: 20px;
            font-size: 0.9rem;
            color: #8aa0b8;
            text-align: center;
            width: 100%;
        }
        .copyright i {
            color: #e05a5a;
        }
        .last-updated {
            display: inline-block;
            background: #eef2f6;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            color: #3a5068;
            margin-bottom: 24px;
        }
        .last-updated i {
            color: #f0a030;
            margin-right: 6px;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-bar {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 16px;
                gap: 6px;
            }
            .nav-bar.open {
                display: flex;
            }
            .nav-bar a {
                padding: 10px 16px;
                border-radius: 8px;
                background: rgba(255, 255, 255, 0.05);
            }
            .header-inner {
                align-items: center;
            }
            .article-body h1 {
                font-size: 2rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .sidebar {
                position: static;
                margin-top: 30px;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
                gap: 4px 8px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .interaction-card {
                padding: 18px 16px;
            }
            .star-rating {
                font-size: 1.6rem;
            }
        }
        .text-muted {
            color: #6a7a8a;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .gap-1 {
            gap: 6px;
        }
        .rounded-full {
            border-radius: 999px;
        }
        .tag {
            display: inline-block;
            background: #e6edf5;
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2a4058;
        }