*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #0d0d0d;
            color: #e8e0d0;
            line-height: 1.8;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #f5c842;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #ffdd77;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #f5d742;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #2a2a2a;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #f0d060;
        }
        h4 {
            font-size: 1.2rem;
            color: #e8c84a;
        }
        p {
            margin-bottom: 1.2rem;
            color: #d8d0c0;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: #1a1a1a;
            border-bottom: 2px solid #f5c842;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(6px);
            background: rgba(20, 20, 20, 0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #f5c842;
            letter-spacing: 1px;
            text-transform: uppercase;
            background: linear-gradient(135deg, #f5c842, #d4a832);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #bbb;
            color: #bbb;
            letter-spacing: 2px;
            font-weight: 300;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .main-nav a {
            color: #d8d0c0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: rgba(245, 200, 66, 0.15);
            color: #f5c842;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #f5c842;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 4px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(245, 200, 66, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #1a1a1a;
            padding: 0.6rem 0;
            border-bottom: 1px solid #2a2a2a;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #f5c842;
        }
        .breadcrumb a {
            color: #d8d0c0;
        }
        .breadcrumb a:hover {
            color: #f5c842;
        }
        .breadcrumb .current {
            color: #f5c842;
            font-weight: 600;
        }
        .hero-section {
            padding: 2.5rem 0 1.8rem;
            background: linear-gradient(145deg, #141414 0%, #1e1a10 100%);
            border-bottom: 1px solid #2a2a2a;
        }
        .hero-section .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            font-size: 0.9rem;
            color: #aaa;
            margin-bottom: 1.2rem;
        }
        .hero-section .meta-line span i {
            color: #f5c842;
            margin-right: 0.3rem;
        }
        .last-updated {
            font-weight: 600;
            color: #f5c842;
        }
        .content-area {
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
            background: #1a1a1a;
            border-radius: 12px;
            padding: 1.6rem 1.2rem;
            border: 1px solid #2a2a2a;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 1px solid #2a2a2a;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .sidebar li {
            margin-bottom: 0.3rem;
        }
        .sidebar a {
            display: block;
            padding: 0.4rem 0.6rem;
            border-radius: 4px;
            font-size: 0.9rem;
            border-left: 3px solid transparent;
            transition: all 0.2s;
        }
        .sidebar a:hover {
            border-left-color: #f5c842;
            background: rgba(245, 200, 66, 0.05);
            text-decoration: none;
        }
        .featured-image {
            margin: 1.8rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
            background: #222;
        }
        .featured-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #aaa;
            background: #1a1a1a;
            border-top: 1px solid #2a2a2a;
        }
        .highlight-box {
            background: linear-gradient(135deg, #1e1a10, #2a2418);
            border-left: 5px solid #f5c842;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: 0.95rem;
            background: #1a1a1a;
            border-radius: 10px;
            overflow: hidden;
        }
        .data-table thead {
            background: #f5c842;
            color: #0d0d0d;
        }
        .data-table th,
        .data-table td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #2a2a2a;
        }
        .data-table tbody tr:hover {
            background: rgba(245, 200, 66, 0.05);
        }
        .interactive-area {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #2a2a2a;
        }
        .interactive-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .form-card {
            background: #1a1a1a;
            border-radius: 12px;
            padding: 1.6rem;
            border: 1px solid #2a2a2a;
        }
        .form-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .form-card label {
            display: block;
            font-weight: 500;
            color: #d8d0c0;
            margin: 0.8rem 0 0.3rem;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            width: 100%;
            padding: 0.6rem 0.8rem;
            border-radius: 6px;
            border: 1px solid #333;
            background: #0d0d0d;
            color: #e8e0d0;
            font-size: 0.95rem;
            transition: border 0.2s;
        }
        .form-card input:focus,
        .form-card textarea:focus,
        .form-card select:focus {
            outline: none;
            border-color: #f5c842;
            box-shadow: 0 0 0 2px rgba(245, 200, 66, 0.2);
        }
        .form-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background: #f5c842;
            color: #0d0d0d;
            font-weight: 700;
            padding: 0.7rem 1.8rem;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            margin-top: 0.8rem;
        }
        .btn:hover {
            background: #ffdd77;
            transform: translateY(-2px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            margin: 0.4rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #444;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5c842;
        }
        .form-card .note {
            font-size: 0.8rem;
            color: #888;
            margin-top: 0.4rem;
        }
        .faq-item {
            background: #1a1a1a;
            border-radius: 8px;
            padding: 1rem 1.2rem;
            margin-bottom: 0.8rem;
            border: 1px solid #2a2a2a;
        }
        .faq-item summary {
            font-weight: 600;
            cursor: pointer;
            color: #f0d060;
            font-size: 1.05rem;
        }
        .faq-item summary::-webkit-details-marker {
            color: #f5c842;
        }
        .faq-item[open] summary {
            margin-bottom: 0.6rem;
        }
        friend-link {
            display: block;
            background: #1a1a1a;
            border-radius: 12px;
            padding: 1.4rem 1.6rem;
            border: 1px solid #2a2a2a;
            margin-top: 2rem;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
            border-bottom: 1px solid #2a2a2a;
            padding-bottom: 0.4rem;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.4rem;
            margin-top: 0.8rem;
        }
        friend-link li {
            margin-bottom: 0;
        }
        friend-link a {
            font-size: 0.9rem;
        }
        .site-footer {
            background: #0d0d0d;
            border-top: 2px solid #2a2a2a;
            padding: 2rem 0 1.5rem;
            margin-top: 2rem;
            text-align: center;
            color: #888;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            margin-top: 0.8rem;
            border-top: 1px solid #222;
            padding-top: 1rem;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                margin-top: 2rem;
            }
            .interactive-grid {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 1rem 0 0.4rem;
                gap: 0.4rem;
                border-top: 1px solid #2a2a2a;
                margin-top: 0.8rem;
            }
            #nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .data-table {
                font-size: 0.8rem;
            }
            .data-table th,
            .data-table td {
                padding: 0.4rem 0.6rem;
            }
            .hero-section {
                padding: 1.5rem 0 1rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.2rem;
            }
            .form-card {
                padding: 1rem;
            }
            .star-rating label {
                font-size: 1.4rem;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0d0d0d;
        }
        ::-webkit-scrollbar-thumb {
            background: #444;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #f5c842;
        }
        @media print {
            .site-header,
            .breadcrumb,
            .sidebar,
            .interactive-area,
            .site-footer,
            friend-link {
                display: none !important;
            }
            body {
                background: #fff;
                color: #000;
            }
            h1,
            h2,
            h3,
            h4 {
                color: #000;
            }
            p {
                color: #222;
            }
            .content-grid {
                display: block;
            }
            .featured-image {
                break-inside: avoid;
            }
        }