*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f5f7fb;
            color: #1a1e2b;
            line-height: 1.7;
            padding-top: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #1d4ed8;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus-visible {
            color: #0f3a9e;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5 {
            font-weight: 700;
            line-height: 1.3;
            color: #0b0f1a;
        }
        h1 {
            font-size: 2.4rem;
            margin: 1.2rem 0 0.8rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.2rem 0 0.9rem;
            border-bottom: 3px solid #e0e6ef;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 0.6rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.4rem;
            color: #334155;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0c1a32 0%, #1a2f4f 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1.2rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.3rem;
            text-decoration: none;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.88;
            text-decoration: none;
        }
        .my-logo i {
            color: #facc15;
            font-size: 2rem;
        }
        .my-logo span {
            background: linear-gradient(to right, #facc15, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e2e8f0;
            padding: 0.5rem 1rem;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.3rem 0.7rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e9edf4;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d0d8e3;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #64748b;
        }
        .breadcrumb a {
            color: #1d4ed8;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #0f1f33, #1b3a5c);
            color: #fff;
            padding: 3rem 0 2.5rem;
            margin-bottom: 2rem;
            border-radius: 0 0 40px 40px;
        }
        .hero h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-top: 0;
        }
        .hero .sub {
            font-size: 1.15rem;
            opacity: 0.9;
            max-width: 720px;
            margin: 0.8rem 0 1.2rem;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            font-size: 0.9rem;
            color: #cbd5e1;
        }
        .hero-meta i {
            margin-right: 6px;
        }
        .page-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0 3rem;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 1.2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 1.8rem;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f3f8;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
        }
        .sidebar-card a i {
            color: #f97316;
            width: 1.2rem;
            text-align: center;
        }
        .search-box {
            display: flex;
            gap: 0.4rem;
            background: #fff;
            border-radius: 60px;
            border: 1px solid #dce2ec;
            padding: 0.2rem 0.2rem 0.2rem 1rem;
            transition: box-shadow 0.25s;
            max-width: 480px;
        }
        .search-box:focus-within {
            box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.2);
            border-color: #1d4ed8;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 0.6rem 0;
            font-size: 0.95rem;
            background: transparent;
            outline: none;
            min-width: 0;
        }
        .search-box button {
            background: #1d4ed8;
            color: #fff;
            border: none;
            border-radius: 60px;
            padding: 0.5rem 1.4rem;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .search-box button:hover {
            background: #0f3a9e;
        }
        .feedback-forms {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2.5rem 0;
            background: #fff;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
        }
        .feedback-forms .form-group {
            margin-bottom: 1rem;
        }
        .feedback-forms label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.25rem;
            color: #1e293b;
        }
        .feedback-forms input,
        .feedback-forms textarea,
        .feedback-forms select {
            width: 100%;
            padding: 0.6rem 0.9rem;
            border: 1px solid #d1d9e6;
            border-radius: 10px;
            font-size: 0.9rem;
            transition: border 0.25s;
            background: #f9fafc;
        }
        .feedback-forms input:focus,
        .feedback-forms textarea:focus,
        .feedback-forms select:focus {
            border-color: #1d4ed8;
            outline: none;
            box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
        }
        .feedback-forms textarea {
            resize: vertical;
            min-height: 80px;
        }
        .feedback-forms .btn {
            background: #0f1f33;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 60px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .feedback-forms .btn:hover {
            background: #1b3a5c;
            transform: translateY(-1px);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #facc15;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            cursor: pointer;
            transition: transform 0.15s;
            color: #d1d5db;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #facc15;
            transform: scale(1.05);
        }
        .site-footer {
            background: #0b1422;
            color: #cbd5e1;
            padding: 2.5rem 0 1.5rem;
            margin-top: auto;
            border-top: 4px solid #facc15;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #fff;
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #2a3f5a;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        .site-footer a {
            color: #93b3d8;
        }
        .site-footer a:hover {
            color: #facc15;
        }
        .friend-link {
            display: block;
            padding: 0.3rem 0;
        }
        .friend-link a {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .copyright {
            border-top: 1px solid #1e3148;
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.85rem;
            color: #7f95b0;
        }
        .copyright strong {
            color: #e2e8f0;
        }
        @media (max-width: 992px) {
            .page-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: inline-block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(12, 26, 50, 0.98);
                padding: 1rem 0.5rem;
                border-radius: 16px;
                margin-top: 0.5rem;
                gap: 0.1rem;
            }
            #nav-toggle:checked+.hamburger+.main-nav {
                display: flex;
            }
            #nav-toggle:checked+.hamburger .fa-bars::before {
                content: "\f00d";
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                width: 100%;
                text-align: center;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .feedback-forms {
                grid-template-columns: 1fr;
                padding: 1.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .header-inner {
                gap: 0.3rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 2rem 0 1.5rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .search-box {
                flex-wrap: wrap;
                border-radius: 20px;
                padding: 0.3rem;
            }
            .search-box input {
                width: 100%;
                padding: 0.4rem 0.6rem;
            }
            .search-box button {
                width: 100%;
                justify-content: center;
                border-radius: 40px;
            }
            .container {
                padding: 0 12px;
            }
        }
        .badge {
            display: inline-block;
            background: #facc15;
            color: #0b0f1a;
            padding: 0.15rem 0.8rem;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .highlight-box {
            background: #eef6ff;
            border-left: 4px solid #1d4ed8;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            margin: 1.2rem 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.2rem;
            text-align: center;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef2f7;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #1d4ed8;
            display: block;
        }
        .stat-card .label {
            font-size: 0.8rem;
            color: #64748b;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #eef2f7;
        }
        th {
            background: #f1f5f9;
            font-weight: 700;
            color: #0f1f33;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .pro-tip {
            background: #fef9e7;
            border-radius: 12px;
            padding: 1rem 1.4rem;
            border: 1px solid #fde68a;
            margin: 1.2rem 0;
            display: flex;
            gap: 0.8rem;
            align-items: flex-start;
        }
        .pro-tip i {
            color: #f59e0b;
            font-size: 1.4rem;
        }
        .player-quote {
            font-style: italic;
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            border: 1px solid #e2e8f0;
            margin: 1.5rem 0;
            position: relative;
        }
        .player-quote::before {
            content: "“";
            font-size: 3.5rem;
            position: absolute;
            top: -0.2rem;
            left: 0.8rem;
            color: #1d4ed8;
            opacity: 0.3;
            font-family: Georgia, serif;
        }
        .player-quote cite {
            display: block;
            margin-top: 0.5rem;
            font-weight: 600;
            color: #1e293b;
        }