*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --accent: #f5a623;
            --accent-dark: #d4891a;
            --bg: #f4f7fa;
            --card-bg: #ffffff;
            --text: #1e2a3a;
            --text-light: #5a6a7a;
            --border: #dce3ec;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding-top: var(--header-h);
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }
        .my-logo:hover {
            color: var(--accent);
        }
        .my-logo span {
            font-weight: 300;
            opacity: 0.7;
            font-size: 0.9rem;
            display: none;
        }
        @media (min-width:640px) {
            .my-logo span {
                display: inline;
            }
        }
        .nav-desktop {
            display: none;
            gap: 8px;
            align-items: center;
        }
        .nav-desktop a {
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
        }
        .nav-desktop a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .nav-desktop a.active {
            background: var(--accent);
            color: var(--primary);
        }
        @media (min-width:900px) {
            .nav-desktop {
                display: flex;
            }
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            z-index: 1100;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #fff;
            border-radius: 4px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        @media (min-width:900px) {
            .hamburger {
                display: none;
            }
        }
        .nav-mobile {
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: var(--primary);
            padding: 20px 24px;
            display: none;
            flex-direction: column;
            gap: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
            z-index: 999;
            max-height: calc(100vh - var(--header-h));
            overflow-y: auto;
        }
        .nav-mobile.open {
            display: flex;
        }
        .nav-mobile a {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.05rem;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .nav-mobile a:hover {
            color: var(--accent);
        }
        .breadcrumb-wrap {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 16px 24px 0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            color: var(--text-light);
            list-style: none;
            padding: 8px 16px;
            background: var(--card-bg);
            border-radius: 30px;
            box-shadow: var(--shadow);
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: var(--text-light);
            font-weight: 600;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 20px 24px 60px;
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
        }
        @media (min-width:900px) {
            .container {
                grid-template-columns: 1fr 320px;
            }
        }
        .main-content {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
        }
        .main-content h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .main-content h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .main-content .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 2px solid var(--border);
        }
        .main-content .meta .updated {
            font-weight: 600;
            color: var(--primary);
        }
        .main-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--accent);
            display: inline-block;
        }
        .main-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-light);
            margin: 28px 0 12px;
        }
        .main-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin: 20px 0 8px;
        }
        .main-content p {
            margin-bottom: 16px;
            font-size: 1rem;
            color: var(--text);
        }
        .main-content p b,
        .main-content p strong {
            color: var(--primary);
        }
        .main-content ul,
        .main-content ol {
            margin: 0 0 20px 24px;
            color: var(--text);
        }
        .main-content li {
            margin-bottom: 8px;
        }
        .main-content .feature-img {
            margin: 24px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .main-content .feature-img img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .main-content .feature-img figcaption {
            padding: 10px 16px;
            background: var(--bg);
            font-size: 0.85rem;
            color: var(--text-light);
            font-style: italic;
        }
        .main-content .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin: 20px 0;
        }
        @media (min-width:600px) {
            .main-content .card-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .main-content .info-card {
            background: var(--bg);
            padding: 18px 20px;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .main-content .info-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
        }
        .main-content .info-card h4 {
            margin-top: 0;
        }
        .main-content .info-card a {
            font-weight: 600;
        }
        .main-content blockquote {
            background: var(--bg);
            padding: 16px 24px;
            border-radius: var(--radius);
            border-left: 5px solid var(--accent);
            margin: 20px 0;
            font-style: italic;
            color: var(--text-light);
        }
        .main-content .highlight-box {
            background: linear-gradient(135deg, #fff6e5, #fff);
            border: 1px solid #f0dcc0;
            padding: 18px 22px;
            border-radius: var(--radius);
            margin: 20px 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar .widget {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
        }
        .sidebar .widget h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 6px;
            display: inline-block;
        }
        .sidebar .widget ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar .widget ul li {
            padding: 6px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar .widget ul li:last-child {
            border-bottom: none;
        }
        .sidebar .widget ul li a {
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar .widget ul li a i {
            color: var(--accent);
            font-size: 0.8rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
            background: var(--bg);
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            background: var(--accent);
            color: var(--primary);
            border: none;
            border-radius: 30px;
            padding: 0 18px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-form button:hover {
            background: var(--accent-dark);
        }
        .comment-box,
        .score-box {
            margin-top: 12px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 12px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: var(--font);
            font-size: 0.95rem;
            resize: vertical;
            min-height: 90px;
            outline: none;
            transition: border 0.25s;
            background: var(--bg);
        }
        .comment-box textarea:focus {
            border-color: var(--accent);
        }
        .comment-box button,
        .score-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            margin-top: 8px;
        }
        .comment-box button:hover,
        .score-box button:hover {
            background: var(--primary-light);
        }
        .score-box .stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin: 8px 0;
        }
        .score-box .stars i.active {
            color: var(--accent);
        }
        .score-box .stars i:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            margin: 0 24px 24px;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
        }
        friend-link h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link .links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
        }
        friend-link .links a {
            font-size: 0.9rem;
            padding: 4px 12px;
            background: var(--bg);
            border-radius: 20px;
            transition: background 0.2s, color 0.2s;
        }
        friend-link .links a:hover {
            background: var(--accent);
            color: var(--primary);
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 32px 24px 24px;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            max-width: var(--max-width);
            margin: 0 auto;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 16px;
        }
        .site-footer a {
            color: var(--accent);
        }
        .site-footer a:hover {
            text-decoration: underline;
        }
        @media (max-width:480px) {
            .main-content h1 {
                font-size: 1.6rem;
            }
            .main-content h2 {
                font-size: 1.3rem;
            }
            .main-content {
                padding: 16px 14px;
            }
            .container {
                padding: 12px 12px 40px;
                gap: 20px;
            }
            .breadcrumb-wrap {
                padding: 8px 12px 0;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 6px 12px;
            }
            .site-header {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            friend-link {
                margin: 0 12px 16px;
                padding: 14px 16px;
            }
            .site-footer {
                padding: 20px 12px 16px;
            }
            .sidebar .widget {
                padding: 14px;
            }
        }
        @media (min-width:600px) and (max-width:899px) {
            .container {
                padding: 16px 20px 40px;
            }
            .main-content {
                padding: 20px 18px;
            }
        }
        .emoji-big {
            font-size: 1.4em;
            line-height: 1;
        }
        .tag {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        .table-wrap th,
        .table-wrap td {
            padding: 10px 14px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .table-wrap th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .table-wrap tr:nth-child(even) {
            background: var(--bg);
        }
        .table-wrap tr:hover {
            background: #fff6e5;
        }
        .btn-small {
            background: var(--primary-light);
            color: #fff;
            border: none;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            cursor: pointer;
        }
        .btn-small:hover {
            background: var(--primary);
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--accent);
            color: var(--primary);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            z-index: 500;
            border: none;
            transition: transform 0.2s, opacity 0.3s;
            opacity: 0.7;
        }
        .scroll-top:hover {
            transform: scale(1.05);
            opacity: 1;
        }
        @media (max-width:480px) {
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }