* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --accent: #f5a623;
            --accent-dark: #d4891a;
            --bg: #f8f9fa;
            --card-bg: #ffffff;
            --text: #1e2a3a;
            --text-light: #5a6a7a;
            --border: #e0e4e8;
            --radius: 12px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        header {
            background: var(--primary);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            padding: 6px 18px;
            border-radius: 40px;
            transition: background 0.2s;
        }
        .my-logo:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 1.3rem;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.7rem;
            opacity: 0.7;
            display: block;
            line-height: 1.2;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: border-color 0.2s;
        }
        .nav-toggle:hover {
            border-color: var(--accent);
        }
        nav {
            display: flex;
            gap: 8px 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent);
        }
        nav a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: transparent;
            padding: 12px 0 4px;
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb a {
            color: var(--primary-light);
        }
        .breadcrumb a:hover {
            color: var(--accent-dark);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        .breadcrumb .sep {
            opacity: 0.5;
        }
        main {
            padding: 24px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .content-body {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 48px;
            margin-bottom: 16px;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 8px;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 24px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            color: var(--text);
        }
        .lead {
            font-size: 1.2rem;
            color: var(--text-light);
            font-weight: 400;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .highlight {
            background: linear-gradient(to right, #fff7e0, #fff0c0);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 24px;
            transition: box-shadow 0.2s;
        }
        .card:hover {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-title i {
            color: var(--accent);
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .data-item {
            background: var(--bg);
            padding: 16px 14px;
            border-radius: 10px;
            text-align: center;
            border: 1px solid var(--border);
        }
        .data-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .data-item .label {
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #f4f6f8;
        }
        tr:hover td {
            background: #eef3f8;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 1rem;
            font-family: var(--font);
            transition: border-color 0.2s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary-light);
            outline: none;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
        }
        .btn i {
            font-size: 0.9rem;
        }
        .star-rating {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            cursor: pointer;
            color: #d0d4d8;
            transition: color 0.15s;
        }
        .star-rating .star.active,
        .star-rating .star:hover,
        .star-rating .star:hover~.star {
            color: var(--accent);
        }
        .star-rating .star {
            transition: color 0.15s;
            user-select: none;
        }
        .sidebar .card {
            padding: 20px;
        }
        .sidebar .card-title {
            font-size: 1.1rem;
        }
        .link-list {
            list-style: none;
            padding: 0;
        }
        .link-list li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list li i {
            color: var(--accent);
            font-size: 0.8rem;
            width: 16px;
        }
        .link-list a {
            font-weight: 500;
        }
        .feature-img {
            margin: 28px 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: var(--card-bg);
            padding: 8px;
        }
        .feature-img img {
            border-radius: calc(var(--radius) - 4px);
        }
        .feature-img figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-light);
            padding: 12px 8px 4px;
            font-style: italic;
        }
        friend-link {
            display: block;
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px 28px;
            border: 1px solid var(--border);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link h3 i {
            color: var(--accent);
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            margin-top: 12px;
        }
        friend-link ul li a {
            font-weight: 500;
        }
        footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 40px 0 24px;
            margin-top: 40px;
        }
        footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
        }
        footer .copy {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        footer a {
            color: rgba(255, 255, 255, 0.85);
        }
        footer a:hover {
            color: var(--accent);
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.15);
                margin-top: 8px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 12px;
                width: 100%;
                border-radius: 6px;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.3rem;
                padding: 4px 14px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card {
                padding: 18px 16px;
            }
            .container {
                padding: 0 16px;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            footer .container {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-item .num {
                font-size: 1.5rem;
            }
            .star-rating {
                font-size: 1.3rem;
            }
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .flex {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .gap-sm {
            gap: 6px;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .last-updated {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .last-updated i {
            font-size: 0.75rem;
        }