*,
        *::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', Arial, sans-serif;
            background: #0b0e14;
            color: #e4e8ed;
            line-height: 1.75;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #f7c948;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #ffdd77;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid #f7c948;
            outline-offset: 2px;
            border-radius: 2px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.35rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #ffffff;
            margin-top: 1.8rem;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: clamp(1.8rem, 4.5vw, 2.8rem);
            margin-top: 0.5rem;
        }
        h2 {
            font-size: clamp(1.4rem, 3.2vw, 2rem);
            border-bottom: 2px solid rgba(247, 201, 72, 0.25);
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: clamp(1.15rem, 2.4vw, 1.5rem);
        }
        h4 {
            font-size: clamp(1rem, 1.8vw, 1.2rem);
            color: #f0e6c5;
        }
        p {
            margin-bottom: 1.1rem;
        }
        strong {
            color: #f7c948;
            font-weight: 600;
        }
        em {
            color: #d4c9a8;
        }
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
            width: 100%;
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 1rem;
            background: #f7c948;
            color: #0b0e14;
            padding: 0.5rem 1.2rem;
            border-radius: 0 0 6px 6px;
            font-weight: 600;
            z-index: 9999;
            transition: top 0.2s;
        }
        .skip-link:focus {
            top: 0;
            text-decoration: none;
        }
        .site-header {
            background: linear-gradient(135deg, #141a24 0%, #1a2230 100%);
            border-bottom: 2px solid #2c3a4a;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: clamp(1.2rem, 3vw, 1.8rem);
            font-weight: 800;
            background: linear-gradient(135deg, #f7c948, #f5a623);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #f7c948;
            font-size: 0.85em;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.92;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #e4e8ed;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.3rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid #f7c948;
            outline-offset: 2px;
        }
        .primary-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        .primary-nav a {
            color: #c8ced6;
            padding: 0.45rem 0.9rem;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .primary-nav a:hover,
        .primary-nav a:focus-visible {
            background: rgba(247, 201, 72, 0.12);
            color: #f7c948;
            text-decoration: none;
        }
        .primary-nav a.active {
            background: rgba(247, 201, 72, 0.18);
            color: #f7c948;
        }
        .breadcrumb {
            padding: 0.75rem 0 0.3rem;
            font-size: 0.85rem;
            color: #8895a7;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            list-style: none;
            padding-left: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            margin-bottom: 0;
        }
        .breadcrumb li+li::before {
            content: "/";
            color: #55657a;
            margin-right: 0.3rem;
        }
        .breadcrumb a {
            color: #b0bed0;
        }
        .breadcrumb a:hover {
            color: #f7c948;
        }
        .breadcrumb .current {
            color: #f7c948;
            font-weight: 500;
        }
        .search-wrap {
            margin: 1.2rem 0 1.8rem;
            display: flex;
            gap: 0.5rem;
            max-width: 600px;
            width: 100%;
        }
        .search-wrap input[type="text"] {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #2c3a4a;
            border-radius: 8px;
            background: #141a24;
            color: #e4e8ed;
            font-size: 0.95rem;
            transition: border 0.25s, box-shadow 0.25s;
        }
        .search-wrap input[type="text"]::placeholder {
            color: #6a7a8e;
        }
        .search-wrap input[type="text"]:focus {
            border-color: #f7c948;
            box-shadow: 0 0 0 3px rgba(247, 201, 72, 0.15);
            outline: none;
        }
        .search-wrap button {
            padding: 0.7rem 1.4rem;
            background: #f7c948;
            border: none;
            border-radius: 8px;
            color: #0b0e14;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-wrap button:hover {
            background: #ffdd66;
        }
        .search-wrap button:active {
            transform: scale(0.97);
        }
        .search-wrap button:focus-visible {
            outline: 2px solid #f7c948;
            outline-offset: 2px;
        }
        .main-content {
            padding: 1.5rem 0 3rem;
            flex: 1;
        }
        article {
            background: #11171f;
            border-radius: 16px;
            padding: clamp(1.2rem, 3vw, 2.5rem);
            border: 1px solid #1e2a36;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }
        .featured-figure {
            margin: 1.5rem 0 2rem;
            border-radius: 12px;
            overflow: hidden;
            background: #0b0e14;
            border: 1px solid #1e2a36;
        }
        .featured-figure img {
            width: 100%;
            height: auto;
            aspect-ratio: 1200/630;
            object-fit: cover;
        }
        .featured-figure figcaption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #8895a7;
            background: #0d121c;
            border-top: 1px solid #1e2a36;
        }
        .toc {
            background: #0d121c;
            border: 1px solid #1e2a36;
            border-radius: 10px;
            padding: 1.2rem 1.5rem;
            margin: 1.8rem 0 2.2rem;
        }
        .toc summary {
            font-weight: 700;
            font-size: 1.1rem;
            color: #f7c948;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .toc summary::-webkit-details-marker {
            display: none;
        }
        .toc summary:hover {
            color: #ffdd77;
        }
        .toc ol {
            margin-top: 0.8rem;
            columns: 1;
            gap: 0.4rem 2rem;
        }
        .toc ol li {
            margin-bottom: 0.3rem;
        }
        .toc ol li a {
            color: #b0bed0;
            font-size: 0.92rem;
        }
        .toc ol li a:hover {
            color: #f7c948;
        }
        @media (min-width: 640px) {
            .toc ol {
                columns: 2;
            }
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: #8895a7;
            background: #0d121c;
            padding: 0.3rem 1rem 0.3rem 0.8rem;
            border-radius: 20px;
            border: 1px solid #1e2a36;
            margin-bottom: 1.2rem;
        }
        .last-updated i {
            color: #f7c948;
        }
        .related-links {
            background: #0d121c;
            border-radius: 10px;
            padding: 1rem 1.4rem;
            margin: 1.8rem 0;
            border-left: 4px solid #f7c948;
        }
        .related-links h4 {
            margin-top: 0;
            margin-bottom: 0.6rem;
            font-size: 1rem;
            color: #f7c948;
        }
        .related-links ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 1.2rem;
            list-style: none;
            padding-left: 0;
        }
        .related-links ul li {
            margin-bottom: 0;
        }
        .related-links ul li a {
            font-size: 0.9rem;
        }
        .feedback-section {
            margin-top: 2.8rem;
            padding-top: 2rem;
            border-top: 2px solid #1e2a36;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 768px) {
            .feedback-section {
                grid-template-columns: 1fr 1fr;
            }
        }
        .feedback-card {
            background: #0d121c;
            border-radius: 12px;
            padding: 1.4rem 1.6rem;
            border: 1px solid #1e2a36;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea {
            padding: 0.65rem 0.9rem;
            border: 2px solid #2c3a4a;
            border-radius: 8px;
            background: #11171f;
            color: #e4e8ed;
            font-size: 0.92rem;
            transition: border 0.25s;
            font-family: inherit;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus {
            border-color: #f7c948;
            outline: none;
            box-shadow: 0 0 0 3px rgba(247, 201, 72, 0.1);
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            align-self: flex-start;
            padding: 0.6rem 1.6rem;
            background: #f7c948;
            border: none;
            border-radius: 8px;
            color: #0b0e14;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
        }
        .feedback-card button:hover {
            background: #ffdd66;
        }
        .feedback-card button:active {
            transform: scale(0.97);
        }
        .feedback-card button:focus-visible {
            outline: 2px solid #f7c948;
            outline-offset: 2px;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.6rem;
            color: #3a4a5a;
            cursor: pointer;
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating label i {
            pointer-events: none;
        }
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f7c948;
        }
        .star-rating input:checked~label {
            color: #f7c948;
        }
        .star-rating label:hover {
            transform: scale(1.15);
        }
        .site-footer {
            background: #0a0e16;
            border-top: 2px solid #1a2230;
            padding: 2.2rem 0 1.8rem;
            margin-top: 2rem;
        }
        .footer-inner {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .footer-friend {
            background: #0d121c;
            border-radius: 10px;
            padding: 1.2rem 1.5rem;
            border: 1px solid #1e2a36;
        }
        .footer-friend h4 {
            margin-top: 0;
            color: #f7c948;
            font-size: 1rem;
            margin-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-friend ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 1.2rem;
            list-style: none;
            padding-left: 0;
        }
        .footer-friend ul li {
            margin-bottom: 0;
        }
        .footer-friend ul li a {
            font-size: 0.9rem;
            color: #b0bed0;
        }
        .footer-friend ul li a:hover {
            color: #f7c948;
        }
        .footer-copy {
            text-align: center;
            font-size: 0.85rem;
            color: #6a7a8e;
            border-top: 1px solid #1a2230;
            padding-top: 1.2rem;
        }
        .footer-copy a {
            color: #b0bed0;
        }
        .footer-copy a:hover {
            color: #f7c948;
        }
        @media (max-width: 767px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.6rem 0 0.2rem;
                gap: 0.15rem;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 0.6rem 0.8rem;
                border-radius: 6px;
                white-space: normal;
            }
            .header-inner {
                align-items: center;
            }
        }
        @media (min-width: 768px) {
            .primary-nav {
                display: flex !important;
            }
        }
        @media (max-width: 480px) {
            .wrapper {
                padding: 0 0.8rem;
            }
            article {
                padding: 1rem;
            }
            .search-wrap {
                flex-direction: column;
            }
            .search-wrap button {
                justify-content: center;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0b0e14;
        }
        ::-webkit-scrollbar-thumb {
            background: #2c3a4a;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3e5066;
        }
        @media print {
            .site-header {
                position: static;
                backdrop-filter: none;
                -webkit-backdrop-filter: none;
            }
            .nav-toggle,
            .search-wrap button,
            .feedback-card button {
                display: none !important;
            }
            body {
                background: #fff;
                color: #222;
            }
            article {
                background: #fff;
                border-color: #ccc;
                box-shadow: none;
            }
            h1,
            h2,
            h3,
            h4,
            h5,
            h6 {
                color: #111;
            }
            strong {
                color: #b8860b;
            }
            a {
                color: #0056b3;
            }
            .site-footer {
                background: #f5f5f5;
                border-color: #ccc;
            }
            .footer-copy {
                color: #555;
            }
            .toc,
            .related-links,
            .feedback-card {
                background: #f9f9f9;
                border-color: #ddd;
            }
            .last-updated {
                background: #f0f0f0;
                border-color: #ddd;
            }
            .featured-figure {
                border-color: #ddd;
            }
            .featured-figure figcaption {
                background: #f5f5f5;
                border-color: #ddd;
            }
        }