* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            font-size: 1.05rem;
        }
        a {
            color: #2b6c8f;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #144a66;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a2639 0%, #2a3b5a 100%);
            color: #fff;
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #ffd966;
        }
        .my-logo span {
            color: #ffd966;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 6px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #e8edf5;
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.2s;
            border: 1px solid transparent;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            text-decoration: none;
            color: #ffd966;
        }
        nav a i {
            margin-right: 6px;
        }
        .breadcrumb-wrap {
            background: #eef1f7;
            padding: 12px 0;
            border-bottom: 1px solid #dce1ec;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px 12px;
            font-size: 0.9rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            color: #4a5568;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #a0aec0;
            font-size: 1.2rem;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2b6c8f;
        }
        .breadcrumb .active {
            color: #1a2639;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(145deg, #1e2a3a 0%, #2c3e5e 100%);
            color: #fff;
            padding: 60px 0 50px;
            text-align: center;
            border-bottom: 4px solid #ffd966;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .hero h1 i {
            color: #ffd966;
            margin-right: 12px;
        }
        .hero p {
            font-size: 1.25rem;
            max-width: 780px;
            margin: 0 auto 24px;
            opacity: 0.92;
            font-weight: 300;
        }
        .hero .last-updated {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        main {
            padding: 50px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 44px;
        }
        .article-body h2 {
            font-size: 2rem;
            margin-top: 48px;
            margin-bottom: 16px;
            color: #1a2639;
            border-left: 5px solid #ffd966;
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            margin-top: 34px;
            margin-bottom: 12px;
            color: #2a3b5a;
        }
        .article-body h4 {
            font-size: 1.2rem;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #3a4b6a;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #2d3748;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: #1a2639;
        }
        .article-body .highlight-box {
            background: #edf2f9;
            border-left: 5px solid #2b6c8f;
            padding: 20px 26px;
            border-radius: 8px;
            margin: 28px 0;
            font-style: normal;
        }
        .article-body .highlight-box i {
            color: #2b6c8f;
            margin-right: 8px;
        }
        .article-img {
            width: 100%;
            border-radius: 14px;
            margin: 30px 0;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
            display: block;
        }
        .article-img+figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: #6b7a8f;
            margin-top: -20px;
            margin-bottom: 30px;
        }
        .inline-link {
            font-weight: 600;
            border-bottom: 2px solid #ffd966;
            padding-bottom: 1px;
        }
        .inline-link:hover {
            background: #ffd96630;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 24px 20px;
            margin-bottom: 28px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8ecf4;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            color: #1a2639;
            border-bottom: 2px solid #ffd966;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 8px;
            border-radius: 8px;
            transition: background 0.2s;
            font-weight: 500;
        }
        .sidebar-card a:hover {
            background: #f0f4fe;
            text-decoration: none;
        }
        .sidebar-card a i {
            width: 24px;
            color: #2b6c8f;
            font-size: 0.95rem;
        }
        .form-card {
            background: #fff;
            border-radius: 14px;
            padding: 28px 30px;
            margin-top: 40px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8ecf4;
        }
        .form-card h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: #1a2639;
        }
        .form-card label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            color: #2d3748;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce1ec;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fafbfc;
            margin-bottom: 18px;
        }
        .form-card input:focus,
        .form-card textarea:focus,
        .form-card select:focus {
            outline: none;
            border-color: #2b6c8f;
            background: #fff;
        }
        .form-card textarea {
            min-height: 120px;
            resize: vertical;
        }
        .form-card .btn {
            background: #1a2639;
            color: #fff;
            border: none;
            padding: 14px 34px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .form-card .btn:hover {
            background: #2b3b5a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 38, 57, 0.25);
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            margin-bottom: 18px;
            cursor: pointer;
        }
        .rating-stars i {
            color: #d1d5db;
            transition: color 0.2s, transform 0.15s;
        }
        .rating-stars i.active,
        .rating-stars i:hover {
            color: #f6b83e;
            transform: scale(1.1);
        }
        .rating-stars i:hover~i {
            color: #d1d5db;
        }
        .comment-list {
            margin-top: 30px;
        }
        .comment-item {
            background: #f7f9fc;
            padding: 18px 22px;
            border-radius: 12px;
            margin-bottom: 16px;
            border-left: 4px solid #dce1ec;
        }
        .comment-item .author {
            font-weight: 700;
            color: #1a2639;
        }
        .comment-item .date {
            font-size: 0.8rem;
            color: #7a8a9f;
            margin-left: 12px;
        }
        .comment-item .text {
            margin-top: 6px;
            color: #2d3748;
        }
        footer {
            background: #141e2c;
            color: #d0d8e6;
            padding: 50px 0 30px;
            border-top: 4px solid #ffd966;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        footer h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        footer a {
            color: #b0c4de;
        }
        footer a:hover {
            color: #ffd966;
            text-decoration: none;
        }
        footer ul {
            list-style: none;
            padding: 0;
        }
        footer li {
            margin-bottom: 8px;
        }
        friend-link {
            display: block;
            padding: 18px 0;
            border-top: 1px solid #2a3b5a;
            border-bottom: 1px solid #2a3b5a;
            margin: 20px 0 24px;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #b0c4de;
            margin: 0 12px 0 4px;
        }
        friend-link a:hover {
            color: #ffd966;
        }
        .copyright {
            text-align: center;
            font-size: 0.88rem;
            color: #8a9bb0;
            padding-top: 20px;
            border-top: 1px solid #2a3b5a;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 6px;
                padding-top: 16px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 16px;
            }
            nav.show {
                display: flex;
            }
            nav a {
                width: 100%;
                text-align: center;
                padding: 12px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1.05rem;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .form-card {
                padding: 20px 18px;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .article-body h3 {
                font-size: 1.25rem;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
                gap: 4px 8px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero {
                padding: 40px 0 30px;
            }
            main {
                padding: 30px 0 40px;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        ::selection {
            background: #ffd966;
            color: #1a2639;
        }