*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a2a6c;
            --secondary: #b21f1f;
            --accent: #fdbb2d;
            --bg: #f7f9fc;
            --text: #1e1e2f;
            --text-light: #4a4a6a;
            --card-bg: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1280px;
            margin: 0 auto;
        }
        header {
            padding: 20px 0 12px;
            border-bottom: 2px solid var(--border);
            background: var(--bg);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .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;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.5px;
            transition: opacity 0.3s;
        }
        .my-logo:hover {
            opacity: 0.8;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: var(--text-light);
            display: block;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        nav a {
            text-decoration: none;
            color: var(--text);
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 40px;
            transition: background 0.2s, color 0.2s;
            font-size: 0.92rem;
        }
        nav a:hover,
        nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid var(--border);
            font-size: 1.5rem;
            padding: 4px 12px;
            border-radius: 8px;
            cursor: pointer;
            color: var(--text);
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: var(--border);
        }
        .breadcrumb {
            padding: 12px 0 6px;
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 4px 8px;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span.sep {
            color: #aaa;
        }
        main {
            padding: 24px 0 48px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 8px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 28px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 18px;
        }
        .meta-info i {
            margin-right: 6px;
        }
        .last-updated {
            font-weight: 600;
            color: var(--text);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 920px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
        }
        article h2 {
            font-size: 1.8rem;
            margin: 40px 0 14px;
            color: var(--primary);
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        article h3 {
            font-size: 1.35rem;
            margin: 32px 0 10px;
            color: var(--secondary);
        }
        article h4 {
            font-size: 1.1rem;
            margin: 24px 0 8px;
            color: var(--text);
            font-weight: 600;
        }
        article p {
            margin-bottom: 18px;
            color: var(--text-light);
        }
        article p strong {
            color: var(--text);
        }
        article ul,
        article ol {
            margin: 0 0 20px 24px;
            color: var(--text-light);
        }
        article li {
            margin-bottom: 8px;
        }
        .featured-image {
            margin: 28px 0 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: #eef;
        }
        .insight-box {
            background: #f0f4ff;
            border-left: 6px solid var(--primary);
            padding: 18px 22px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
        }
        .insight-box p {
            margin-bottom: 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 22px 20px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 14px;
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card a {
            color: var(--text);
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            border-bottom: 1px solid var(--border);
            transition: color 0.2s;
        }
        .sidebar-card a:hover {
            color: var(--secondary);
        }
        .sidebar-card a i {
            color: var(--accent);
            font-size: 0.85rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0 20px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: var(--secondary);
        }
        .feedback-section {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 2px solid var(--border);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 640px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #f8fafe;
            border-radius: var(--radius);
            padding: 20px 22px;
        }
        .feedback-card h3 {
            font-size: 1.15rem;
            margin-bottom: 14px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 0.93rem;
            font-family: var(--font);
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--primary);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 18px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: var(--secondary);
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-stars i.active {
            color: var(--accent);
        }
        footer {
            border-top: 2px solid var(--border);
            padding: 32px 0 24px;
            margin-top: 16px;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
        }
        friend-link {
            display: block;
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            margin-bottom: 20px;
        }
        friend-link h3 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
        }
        friend-link li a {
            color: var(--text);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s;
        }
        friend-link li a:hover {
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            color: var(--text-light);
            font-size: 0.88rem;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            width: 100%;
        }
        .copyright strong {
            color: var(--text);
        }
        @media (max-width: 768px) {
            body {
                padding: 0 12px;
            }
            h1 {
                font-size: 1.8rem;
            }
            article {
                padding: 20px 16px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                background: var(--card-bg);
                border-radius: var(--radius);
                padding: 12px 16px;
                box-shadow: var(--shadow);
                margin-top: 8px;
            }
            .nav-wrap.open {
                display: flex;
            }
            .nav-wrap a {
                padding: 10px 0;
                border-bottom: 1px solid var(--border);
            }
            .hamburger {
                display: inline-block;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .meta-info {
                font-size: 0.82rem;
                gap: 8px 16px;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            friend-link ul {
                flex-direction: column;
                gap: 6px;
            }
        }
        @media (min-width: 769px) {
            .nav-wrap {
                display: flex !important;
                flex-direction: row;
                background: none;
                box-shadow: none;
                padding: 0;
                margin: 0;
                width: auto;
            }
            .nav-wrap a {
                border: none;
                padding: 6px 14px;
            }
            .hamburger {
                display: none !important;
            }
        }
        .emoji-big {
            font-size: 1.3em;
            margin-right: 4px;
        }
        .accent-highlight {
            color: var(--secondary);
            font-weight: 600;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 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;
        }
        .table-wrap tr:nth-child(even) {
            background: #f4f6fb;
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            width: 48px;
            height: 48px;
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s, background 0.3s;
            z-index: 99;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .scroll-top:hover {
            background: var(--secondary);
            transform: translateY(-4px);
        }