*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fb;
            color: #1e1e2f;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #1a6bb0;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: #c44536;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.25;
            color: #0b1d2b;
            margin-top: 1.8rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 3px solid #e0e7ef;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 0.8rem 0 1.5rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1d2b 0%, #1a3346 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .my-logo {
            font-size: 1.7rem;
            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;
            padding: 0.2rem 0;
        }
        .my-logo a {
            color: inherit;
            background: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            text-decoration: none;
            opacity: 0.85;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.25rem 1rem;
            flex-wrap: wrap;
            margin: 0;
        }
        .nav-list li a {
            color: #e5edf5;
            font-weight: 500;
            padding: 0.3rem 0.6rem;
            border-radius: 30px;
            transition: background .25s, color .25s;
            font-size: 0.95rem;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f9d423;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: #fff;
            padding: 0.2rem 0.5rem;
        }
        .breadcrumb {
            background: #e9edf3;
            padding: 0.5rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d8e2;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 0.6rem;
            color: #6b7a8a;
        }
        .breadcrumb a {
            color: #1a6bb0;
        }
        .breadcrumb li:last-child a {
            color: #2d3e50;
            font-weight: 600;
            pointer-events: none;
            text-decoration: none;
        }
        .hero {
            background: linear-gradient(135deg, #e9eef4 0%, #dce3ed 100%);
            padding: 2.2rem 0 1.8rem;
            border-radius: 0 0 40px 40px;
            margin-bottom: 1.8rem;
        }
        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }
        .hero .sub {
            font-size: 1.15rem;
            color: #2c3e50;
            max-width: 720px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.95rem;
            color: #3d5063;
            margin-top: 0.8rem;
        }
        .hero-meta i {
            margin-right: 0.3rem;
            color: #c44536;
        }
        .content-area {
            padding: 1rem 0 2.5rem;
            flex: 1;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .main-article {
            background: #fff;
            border-radius: 24px;
            padding: 2rem 2.2rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
        }
        .main-article img.featured {
            border-radius: 18px;
            margin: 1.2rem 0 1.8rem;
            width: 100%;
            object-fit: cover;
            max-height: 420px;
            background: #cbd5e1;
        }
        .main-article .img-caption {
            font-size: 0.85rem;
            color: #4f6579;
            margin-top: -0.8rem;
            margin-bottom: 1.5rem;
            text-align: center;
            font-style: italic;
        }
        .sidebar {
            background: #fff;
            border-radius: 24px;
            padding: 1.6rem 1.5rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
            align-self: start;
            position: sticky;
            top: 90px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #e0e7ef;
            padding-bottom: 0.4rem;
        }
        .sidebar ul {
            list-style: none;
            margin: 0.5rem 0 0;
            padding: 0;
        }
        .sidebar ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .sidebar ul li a {
            font-weight: 500;
        }
        .search-block {
            background: #f0f4fa;
            border-radius: 60px;
            padding: 0.2rem 0.2rem 0.2rem 1.2rem;
            display: flex;
            align-items: center;
            margin: 1.2rem 0 1.8rem;
            border: 1px solid #ccd7e6;
        }
        .search-block input {
            border: none;
            background: transparent;
            padding: 0.7rem 0.5rem;
            font-size: 1rem;
            flex: 1;
            min-width: 0;
            outline: none;
        }
        .search-block button {
            background: #1a6bb0;
            border: none;
            color: #fff;
            padding: 0.6rem 1.6rem;
            border-radius: 60px;
            font-weight: 600;
            cursor: pointer;
            transition: background .25s;
            font-size: 0.95rem;
        }
        .search-block button:hover {
            background: #c44536;
        }
        .interaction-box {
            background: #f8fafd;
            border-radius: 20px;
            padding: 1.6rem 1.8rem;
            margin: 2.5rem 0 1.5rem;
            border: 1px solid #e2e9f2;
        }
        .interaction-box h3 {
            margin-top: 0;
        }
        .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1rem;
        }
        .form-row input,
        .form-row textarea,
        .form-row select {
            flex: 1 1 200px;
            padding: 0.7rem 1rem;
            border: 1px solid #ccd7e6;
            border-radius: 30px;
            font-size: 0.95rem;
            background: #fff;
            outline: none;
        }
        .form-row textarea {
            flex-basis: 100%;
            min-height: 100px;
            border-radius: 16px;
        }
        .form-row .star-select {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        .form-row .star-select i {
            font-size: 1.6rem;
            color: #d1d9e6;
            cursor: pointer;
            transition: color .2s;
        }
        .form-row .star-select i.active,
        .form-row .star-select i:hover {
            color: #f7b731;
        }
        .btn {
            background: #1a6bb0;
            border: none;
            color: #fff;
            padding: 0.65rem 2rem;
            border-radius: 60px;
            font-weight: 600;
            cursor: pointer;
            transition: background .25s, transform .1s;
            font-size: 1rem;
        }
        .btn:hover {
            background: #c44536;
            transform: scale(1.02);
        }
        .btn-secondary {
            background: #2d3e50;
        }
        .btn-secondary:hover {
            background: #1b2a37;
        }
        friend-link {
            display: block;
            padding: 1.8rem 0 1rem;
            border-top: 2px solid #dce3ed;
            margin-top: 0.5rem;
        }
        friend-link h4 {
            margin-top: 0;
            font-size: 1.1rem;
            color: #1a3346;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.8rem;
            margin: 0.6rem 0 0;
            padding: 0;
        }
        friend-link ul li a {
            font-weight: 500;
        }
        .site-footer {
            background: #0b1d2b;
            color: #bcc9d9;
            padding: 1.8rem 0 1.2rem;
            font-size: 0.9rem;
            margin-top: 2rem;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
        }
        .site-footer a {
            color: #bcc9d9;
        }
        .site-footer a:hover {
            color: #f9d423;
        }
        .site-footer .copy {
            font-size: 0.82rem;
            color: #8a9bb0;
        }
        @media (max-width: 820px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .main-article {
                padding: 1.5rem 1.2rem;
            }
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b1d2b;
                padding: 1rem 0 1.2rem;
                margin-top: 0.5rem;
                border-top: 1px solid #2a4359;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 0.6rem 1.2rem;
                display: block;
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .main-article {
                padding: 1rem 0.8rem;
            }
            .interaction-box {
                padding: 1.2rem 1rem;
            }
            .form-row input,
            .form-row textarea,
            .form-row select {
                flex-basis: 100%;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
        }
        .highlight {
            background: #fcf4d9;
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #1a6bb0;
            color: #fff;
            font-size: 0.7rem;
            padding: 0.15rem 0.7rem;
            border-radius: 40px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .stat-box {
            background: #f0f4fa;
            border-radius: 16px;
            padding: 0.8rem 1.2rem;
            margin: 1rem 0;
            border-left: 4px solid #f7971e;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        table th,
        table td {
            padding: 0.6rem 0.8rem;
            text-align: left;
            border-bottom: 1px solid #dce3ed;
        }
        table th {
            background: #e9eef4;
            font-weight: 600;
        }
        .blockquote {
            border-left: 4px solid #c44536;
            padding: 0.8rem 1.2rem;
            background: #f8fafd;
            border-radius: 0 12px 12px 0;
            margin: 1.2rem 0;
            font-style: italic;
            color: #2d3e50;
        }
        .blockquote cite {
            display: block;
            margin-top: 0.5rem;
            font-style: normal;
            font-weight: 600;
            color: #1a3346;
        }