*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #fafaf9;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 1.0625rem;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #b22234;
            text-decoration: none;
            transition: color 0.25s ease, border-bottom 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #8b1a1a;
            border-bottom: 2px solid #b22234;
        }
        a:focus-visible {
            outline: 3px solid #b22234;
            outline-offset: 2px;
            border-radius: 4px;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: #0a1628;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.4rem;
            margin-bottom: 0.6rem;
            border-left: 5px solid #b22234;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 1.8rem;
            margin-bottom: 0.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
            color: #2c4a6e;
        }
        p {
            margin-bottom: 1.1rem;
            max-width: 75ch;
        }
        ul,
        ol {
            margin: 0.6rem 0 1.2rem 1.6rem;
        }
        li {
            margin-bottom: 0.3rem;
        }
        strong {
            color: #0a1628;
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0a1628 0%, #1a2a44 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            color: #f7d94e;
            font-size: 1.6rem;
        }
        .my-logo:hover {
            color: #f7d94e;
            border-bottom: none;
        }
        .my-logo span {
            font-weight: 300;
            color: #b0c4de;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.3rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            gap: 0.3rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #e8eef5;
            padding: 0.45rem 1rem;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            border: 1px solid transparent;
        }
        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f7d94e;
            border-bottom: 1px solid #f7d94e;
        }
        .nav-menu a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: #f0f2f5;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce1e8;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #6b7a8f;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2c4a6e;
        }
        .breadcrumb .current {
            color: #6b7a8f;
            font-weight: 500;
        }
        main {
            flex: 1;
            padding: 1.8rem 0 3rem;
        }
        article {
            background: #fff;
            border-radius: 24px;
            padding: 2rem 2.4rem;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
            margin-bottom: 2rem;
        }
        .article-header {
            margin-bottom: 1.8rem;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 1.2rem;
        }
        .article-header .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            font-size: 0.95rem;
            color: #4a5a72;
            margin-top: 0.5rem;
        }
        .article-header .meta i {
            margin-right: 6px;
            color: #b22234;
        }
        .last-updated {
            font-weight: 600;
            color: #1a3a5c;
        }
        .featured-figure {
            margin: 1.8rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            background: #eef2f7;
            position: relative;
        }
        .featured-figure img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .featured-figure figcaption {
            padding: 0.7rem 1rem;
            font-size: 0.9rem;
            color: #3a4a62;
            background: #f7f9fc;
            border-top: 1px solid #dce1e8;
            font-style: italic;
        }
        .content-section {
            margin-bottom: 2.2rem;
        }
        .content-section p:last-child {
            margin-bottom: 0;
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            margin: 0.8rem 0 1.2rem;
            padding: 0;
            list-style: none;
        }
        .link-list-inline li a {
            background: #f0f4fa;
            padding: 0.2rem 0.9rem;
            border-radius: 40px;
            font-size: 0.9rem;
            border: 1px solid #dce1e8;
            display: inline-block;
            transition: all 0.2s;
        }
        .link-list-inline li a:hover {
            background: #b22234;
            color: #fff;
            border-color: #b22234;
        }
        .search-box {
            background: #f4f7fc;
            border-radius: 60px;
            padding: 0.3rem 0.3rem 0.3rem 1.5rem;
            display: flex;
            align-items: center;
            max-width: 520px;
            margin: 0.8rem 0 1.2rem;
            border: 1px solid #dce1e8;
            transition: box-shadow 0.3s;
        }
        .search-box:focus-within {
            box-shadow: 0 0 0 4px rgba(178, 34, 52, 0.15);
            border-color: #b22234;
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.7rem 0;
            font-size: 1rem;
            outline: none;
            min-width: 0;
        }
        .search-box button {
            background: #b22234;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.55rem 1.4rem;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-box button:hover {
            background: #8b1a1a;
        }
        .rating-area {
            background: #f7f9fc;
            border-radius: 20px;
            padding: 1.4rem 1.8rem;
            margin: 1.6rem 0;
            border: 1px solid #e8edf4;
        }
        .rating-area h4 {
            margin-top: 0;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d4a017;
            cursor: pointer;
            margin: 0.4rem 0 0.6rem;
        }
        .star-rating i {
            transition: transform 0.15s, color 0.2s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
            color: #f7c948;
        }
        .rating-area form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1rem;
            align-items: center;
        }
        .rating-area form input[type="number"] {
            width: 80px;
            padding: 0.4rem 0.6rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 0.95rem;
        }
        .rating-area form button {
            background: #1e3a5f;
            color: #fff;
            border: none;
            padding: 0.45rem 1.4rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
        }
        .rating-area form button:hover {
            background: #0a1628;
        }
        .comment-area {
            background: #f7f9fc;
            border-radius: 20px;
            padding: 1.4rem 1.8rem;
            margin: 1.6rem 0;
            border: 1px solid #e8edf4;
        }
        .comment-area textarea {
            width: 100%;
            min-height: 100px;
            border: 1px solid #dce1e8;
            border-radius: 12px;
            padding: 0.8rem 1rem;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            transition: border-color 0.3s;
        }
        .comment-area textarea:focus {
            border-color: #b22234;
            outline: none;
            box-shadow: 0 0 0 3px rgba(178, 34, 52, 0.1);
        }
        .comment-area form {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .comment-area form button {
            align-self: flex-end;
            background: #b22234;
            color: #fff;
            border: none;
            padding: 0.5rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
        }
        .comment-area form button:hover {
            background: #8b1a1a;
        }
        .related-links {
            background: #fff;
            border-radius: 20px;
            padding: 1.6rem 2rem;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
            margin-bottom: 2rem;
        }
        .related-links h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .related-links ul {
            list-style: none;
            margin: 0.6rem 0 0;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 0.4rem 1.2rem;
        }
        .related-links li a {
            display: block;
            padding: 0.35rem 0.8rem;
            border-radius: 8px;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        .related-links li a:hover {
            background: #f0f4fa;
        }
        .site-footer {
            background: #0a1628;
            color: #c8d4e3;
            padding: 2.4rem 0 1.2rem;
            margin-top: 1.8rem;
            border-top: 4px solid #b22234;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem 2.4rem;
        }
        .footer-inner h4 {
            color: #f7d94e;
            margin-top: 0;
            font-size: 1.1rem;
            border-left: none;
            padding-left: 0;
        }
        .footer-inner a {
            color: #b0c4de;
        }
        .footer-inner a:hover {
            color: #f7d94e;
        }
        friend-link {
            display: block;
            margin-top: 0.6rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.3rem;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 1.2rem;
            border-top: 1px solid #1e3050;
            font-size: 0.9rem;
            color: #7a8aa3;
        }
        .copyright strong {
            color: #d4e0ed;
        }
        @media (max-width: 820px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0a1628;
                padding: 1rem 0 0.8rem;
                border-top: 1px solid #1e3050;
                margin-top: 0.6rem;
                gap: 0.2rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.6rem 1.2rem;
                border-radius: 0;
                border: none;
                border-left: 3px solid transparent;
            }
            .nav-menu a:hover {
                border-left-color: #f7d94e;
                background: rgba(255, 255, 255, 0.05);
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                align-items: center;
            }
            article {
                padding: 1.2rem 1.2rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
            .search-box {
                max-width: 100%;
                flex-wrap: wrap;
                border-radius: 30px;
                padding: 0.3rem;
            }
            .search-box input {
                padding: 0.5rem 0.8rem;
                min-width: 100px;
            }
            .search-box button {
                padding: 0.45rem 1rem;
                font-size: 0.85rem;
            }
            .rating-area,
            .comment-area {
                padding: 1rem 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
            article {
                padding: 0.8rem 0.8rem;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.2rem;
                padding-left: 0.6rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .article-header .meta {
                font-size: 0.85rem;
                gap: 0.4rem 1rem;
            }
            .container {
                padding: 0 0.6rem;
            }
        }
        .emoji-lg {
            font-size: 1.3em;
            margin-right: 0.2em;
        }
        .text-accent {
            color: #b22234;
        }
        .highlight-box {
            background: #f0f7fe;
            border-left: 4px solid #1e3a5f;
            padding: 1rem 1.4rem;
            border-radius: 0 16px 16px 0;
            margin: 1.2rem 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.2rem 2rem;
            margin: 1rem 0;
        }
        @media (max-width: 600px) {
            .two-col {
                grid-template-columns: 1fr;
            }
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 0;
            background: #b22234;
            color: #fff;
            padding: 0.6rem 1.2rem;
            z-index: 10000;
            border-radius: 0 0 8px 0;
            font-weight: 600;
        }
        .skip-link:focus {
            top: 0;
        }