*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #2a6f97;
            --primary-dark: #1a4b6d;
            --secondary: #f0a500;
            --accent: #e85d04;
            --light-bg: #f8f9fa;
            --dark-bg: #1b2838;
            --text: #2c3e50;
            --text-light: #6c757d;
            --white: #ffffff;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: all 0.25s ease;
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--light-bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
            text-decoration: underline;
            outline: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--dark-bg);
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: var(--white);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0.6rem 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.6rem 1rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 1.8rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--dark-bg);
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--light-bg);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            transition: var(--transition);
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            background: var(--light-bg);
            color: var(--primary);
            text-decoration: none;
        }
        .main-nav a.active {
            background: var(--primary);
            color: var(--white);
        }
        .breadcrumb {
            padding: 0.8rem 0 0.4rem;
            font-size: 0.88rem;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #aaa;
        }
        .breadcrumb .current {
            color: var(--text-light);
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #3a8db5 100%);
            color: var(--white);
            padding: 3rem 0 2.5rem;
            border-radius: 0 0 var(--radius) var(--radius);
            margin-bottom: 2rem;
        }
        .hero h1 {
            color: var(--white);
            font-size: 2.6rem;
            margin-bottom: 0.6rem;
        }
        .hero p {
            font-size: 1.15rem;
            opacity: 0.92;
            max-width: 720px;
            margin-bottom: 0;
        }
        .hero .meta {
            margin-top: 1rem;
            font-size: 0.95rem;
            opacity: 0.85;
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
        }
        .hero .meta i {
            margin-right: 0.35rem;
        }
        .section {
            background: var(--white);
            border-radius: var(--radius);
            padding: 2rem 2rem 1.8rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .section-sm {
            padding: 1.5rem 1.8rem;
        }
        .featured-image-wrap {
            margin: 1.5rem 0 2rem;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: #eef2f5;
        }
        .featured-image-wrap img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-image-wrap figcaption {
            padding: 0.7rem 1.2rem;
            font-size: 0.85rem;
            color: var(--text-light);
            background: var(--white);
            border-top: 1px solid #e9ecef;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .card {
            background: var(--light-bg);
            border-radius: var(--radius);
            padding: 1.5rem 1.3rem;
            border-left: 4px solid var(--secondary);
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .card h4 {
            margin-top: 0;
            color: var(--primary-dark);
        }
        .card i {
            color: var(--secondary);
            font-size: 1.4rem;
            margin-bottom: 0.5rem;
        }
        .value-table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .value-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            min-width: 540px;
        }
        .value-table th {
            background: var(--primary-dark);
            color: var(--white);
            padding: 0.75rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .value-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e9ecef;
        }
        .value-table tr:nth-child(even) {
            background: #f1f4f8;
        }
        .value-table tr:hover td {
            background: #e2eaf1;
        }
        .value-table .tier-s {
            color: #d63384;
            font-weight: 700;
        }
        .value-table .tier-a {
            color: #0d6efd;
            font-weight: 600;
        }
        .value-table .tier-b {
            color: #198754;
        }
        .value-table .tier-c {
            color: #856404;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dee2e6;
            border-radius: 8px;
            font-family: var(--font);
            font-size: 0.95rem;
            transition: var(--transition);
            background: var(--white);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(42, 111, 151, 0.15);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            background: var(--primary);
            color: var(--white);
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--dark-bg);
        }
        .btn-secondary:hover {
            background: #d49400;
            color: var(--dark-bg);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--white);
        }
        .btn-accent:hover {
            background: #c94d00;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 1.6rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #ccc;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--secondary);
        }
        .comment-list {
            margin: 1.5rem 0 0.5rem;
        }
        .comment-item {
            padding: 1rem 1.2rem;
            border-left: 3px solid var(--secondary);
            background: var(--light-bg);
            border-radius: 0 8px 8px 0;
            margin-bottom: 0.8rem;
        }
        .comment-item .author {
            font-weight: 600;
            color: var(--primary-dark);
        }
        .comment-item .date {
            font-size: 0.82rem;
            color: var(--text-light);
            margin-left: 0.8rem;
        }
        .comment-item .stars {
            color: var(--secondary);
            font-size: 0.9rem;
            margin-right: 0.5rem;
        }
        friend-link {
            display: block;
            background: var(--light-bg);
            border-radius: var(--radius);
            padding: 1.8rem 2rem;
            margin: 1.5rem 0;
        }
        friend-link a {
            display: inline-block;
            padding: 0.3rem 1rem;
            margin: 0.2rem 0.4rem 0.2rem 0;
            background: var(--white);
            border-radius: 20px;
            font-size: 0.9rem;
            border: 1px solid #dee2e6;
            transition: var(--transition);
        }
        friend-link a:hover {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
            text-decoration: none;
        }
        .site-footer {
            background: var(--dark-bg);
            color: #b0c4d8;
            padding: 2.5rem 0 1.8rem;
            margin-top: 2.5rem;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }
        .site-footer h4 {
            color: var(--white);
            margin-top: 0;
            font-size: 1.05rem;
        }
        .site-footer a {
            color: #90b4d0;
        }
        .site-footer a:hover {
            color: var(--secondary);
        }
        .site-footer .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #2a3a4c;
            padding-top: 1.5rem;
            margin-top: 1rem;
            font-size: 0.85rem;
            text-align: center;
            color: #6f8aa0;
        }
        .btt {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow);
            transition: var(--transition);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .btt:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: var(--white);
                padding: 0.8rem 0;
                border-top: 1px solid #e9ecef;
                margin-top: 0.4rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 0.6rem 1rem;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .section {
                padding: 1.3rem 1rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .btt {
                bottom: 1.2rem;
                right: 1.2rem;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 2rem 0 1.5rem;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .value-table {
                font-size: 0.82rem;
                min-width: 400px;
            }
            .value-table th,
            .value-table td {
                padding: 0.5rem 0.7rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }
        .gap-1 {
            gap: 1rem;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .highlight {
            background: #fff3cd;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
        }
        .tag {
            display: inline-block;
            background: #e2eaf1;
            padding: 0.15rem 0.7rem;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--primary-dark);
        }
        .emoji-lg {
            font-size: 1.8rem;
            line-height: 1;
        }
        hr {
            border: none;
            border-top: 2px dashed #dee2e6;
            margin: 2rem 0;
        }
        .last-updated {
            font-size: 0.88rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex-wrap: wrap;
        }
        .last-updated i {
            color: var(--primary);
        }