*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f7f9fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1e40af;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            color: #0f172a;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4em;
            letter-spacing: -0.01em;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #2563eb;
            padding-bottom: 0.3rem;
            display: inline-block;
            margin-top: 2em;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 1.6em;
            color: #1e293b;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2em;
            color: #334155;
        }
        p {
            margin-bottom: 1.2em;
            font-size: 1.05rem;
            color: #1e293b;
        }
        ul,
        ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        li {
            margin-bottom: 0.5em;
        }
        strong {
            color: #0f172a;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
            padding: 0 0 12px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            max-width: 1140px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            color: #facc15;
            letter-spacing: -0.02em;
            text-transform: uppercase;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: #facc15;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            color: #fbbf24;
            text-decoration: none;
        }
        .my-logo span {
            color: #fff;
            font-weight: 300;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-list {
            list-style: none;
            display: flex;
            gap: 6px 18px;
            flex-wrap: wrap;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            color: #e2e8f0;
            font-weight: 500;
            font-size: 0.92rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-list li a:hover {
            color: #facc15;
            border-bottom-color: #facc15;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            padding: 8px 20px 4px;
            max-width: 1140px;
            margin: 0 auto;
            font-size: 0.85rem;
            color: #94a3b8;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #facc15;
        }
        .breadcrumb span {
            color: #facc15;
        }
        .hero {
            background: linear-gradient(to right, #0f172a, #1e293b);
            color: #fff;
            padding: 40px 20px 50px;
            margin-bottom: 30px;
            border-radius: 0 0 24px 24px;
        }
        .hero h1 {
            color: #fff;
            font-size: 2.6rem;
            margin: 0 0 12px 0;
            letter-spacing: -0.02em;
        }
        .hero p {
            color: #cbd5e1;
            font-size: 1.15rem;
            max-width: 780px;
            margin-bottom: 8px;
        }
        .hero .meta {
            color: #94a3b8;
            font-size: 0.9rem;
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 14px;
        }
        .hero .meta i {
            margin-right: 6px;
            color: #facc15;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 20px 0 40px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 24px;
            border: 1px solid #e9edf2;
        }
        .sidebar-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            border-left: 4px solid #2563eb;
            padding-left: 12px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar-card ul li a {
            font-weight: 500;
        }
        .featured-img {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            background: #e9edf2;
        }
        .featured-img img {
            width: 100%;
            display: block;
        }
        .featured-img figcaption {
            padding: 12px 20px;
            font-size: 0.9rem;
            color: #475569;
            background: #fff;
            border-top: 1px solid #e9edf2;
        }
        .interact-section {
            background: #fff;
            border-radius: 20px;
            padding: 32px 28px;
            margin: 40px 0 30px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e9edf2;
        }
        .interact-section h2 {
            margin-top: 0;
            border-bottom: none;
            display: block;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            font-weight: 600;
            display: block;
            margin-bottom: 4px;
            color: #0f172a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: 0.2s;
            background: #f8fafc;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #2563eb;
            outline: none;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }
        .btn {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background: #1e40af;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
        }
        .btn-secondary {
            background: #f1f5f9;
            color: #1e293b;
        }
        .btn-secondary:hover {
            background: #e2e8f0;
            box-shadow: none;
            transform: none;
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 1.8rem;
            color: #cbd5e1;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars i {
            transition: 0.2s;
        }
        .rating-stars i:hover,
        .rating-stars i:hover~i {
            color: #facc15;
        }
        .rating-stars .active {
            color: #facc15;
        }
        friend-link {
            display: block;
            background: #f1f5f9;
            border-radius: 16px;
            padding: 24px 28px;
            margin-top: 30px;
            border: 1px solid #e2e8f0;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
        }
        friend-link ul li a {
            font-weight: 500;
        }
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 32px 20px 18px;
            margin-top: 50px;
            border-top: 4px solid #2563eb;
        }
        .footer-inner {
            max-width: 1140px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 20px;
        }
        .footer-inner .copyright {
            font-size: 0.9rem;
        }
        .footer-inner .copyright strong {
            color: #facc15;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .sidebar {
                position: static;
            }
            .hero h1 {
                font-size: 2rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 16px 0 8px;
                gap: 4px;
            }
            .nav-list li a {
                display: block;
                padding: 10px 0;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .nav-wrap .hamburger {
                order: 2;
            }
            .nav-wrap .nav-list {
                order: 3;
                flex-basis: 100%;
            }
        }
        @media (max-width: 600px) {
            .container {
                padding: 0 14px;
            }
            .header-inner {
                padding: 10px 14px;
            }
            .hero {
                padding: 28px 14px 34px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .interact-section {
                padding: 20px 16px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 6px 14px 2px;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
            friend-link ul {
                flex-direction: column;
                gap: 6px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
        }
        .text-highlight {
            background: linear-gradient(to right, #facc15, #fbbf24);
            color: #0f172a;
            padding: 0 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #2563eb;
            color: #fff;
            font-size: 0.7rem;
            padding: 2px 10px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.02em;
            text-transform: uppercase;
        }
        .divider {
            height: 2px;
            background: linear-gradient(to right, #e2e8f0, transparent);
            margin: 32px 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #f1f5f9;
        }
        th {
            background: #f1f5f9;
            font-weight: 600;
            color: #0f172a;
        }
        tr:hover td {
            background: #f8fafc;
        }
        .tip-box {
            background: #f0f7ff;
            border-left: 5px solid #2563eb;
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .tip-box strong {
            color: #1e40af;
        }
        .emoji-big {
            font-size: 1.8rem;
            vertical-align: middle;
        }