* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f8f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #1a6dd4;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0b3d7a;
            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;
            margin-top: 1.5em;
            margin-bottom: 0.5em;
            color: #0b1a2e;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4em;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #1a6dd4;
            padding-left: 16px;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2em;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
            border-radius: 24px;
            padding: 20px 28px 40px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 12px 16px 32px;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
                padding-left: 12px;
            }
            h3 {
                font-size: 1.15rem;
            }
        }
        .header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 12px;
            border-bottom: 2px solid #eef2f7;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #0b1a2e;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            color: #1a6dd4;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #1a6dd4;
        }
        .my-logo span {
            background: linear-gradient(135deg, #1a6dd4, #0b3d7a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-bar a {
            padding: 8px 14px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #1e2a3a;
            transition: background 0.2s, color 0.2s;
        }
        .nav-bar a:hover {
            background: #e8edf5;
            color: #1a6dd4;
            text-decoration: none;
        }
        .nav-bar a.active {
            background: #1a6dd4;
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e2a3a;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e8edf5;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-bar {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 12px;
                gap: 4px;
            }
            .nav-bar.open {
                display: flex;
            }
            .nav-bar a {
                padding: 10px 16px;
                border-radius: 8px;
            }
        }
        .breadcrumb {
            padding: 14px 0 8px;
            font-size: 0.9rem;
            color: #5e6f8d;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 8px;
            color: #a0b3cc;
        }
        .breadcrumb a {
            color: #1a6dd4;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-wrap {
            background: #f1f5fb;
            border-radius: 60px;
            padding: 6px 6px 6px 20px;
            display: flex;
            align-items: center;
            max-width: 480px;
            margin: 28px 0 20px;
            border: 1px solid #dce4ef;
        }
        .search-wrap i {
            color: #5e6f8d;
            font-size: 1rem;
        }
        .search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 12px;
            font-size: 0.95rem;
            outline: none;
            color: #1e2a3a;
        }
        .search-wrap input::placeholder {
            color: #8a9bb5;
        }
        .search-wrap button {
            background: #1a6dd4;
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s;
            border: none;
        }
        .search-wrap button:hover {
            background: #0b3d7a;
        }
        .toc {
            background: #f3f7fe;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 28px 0 32px;
            border: 1px solid #dce4ef;
        }
        .toc h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .toc ul {
            columns: 2 220px;
            list-style: none;
            padding: 0;
            margin: 12px 0 0;
        }
        .toc li {
            padding: 4px 0;
            font-size: 0.95rem;
        }
        .toc li a {
            color: #1a6dd4;
        }
        .toc li a:hover {
            text-decoration: underline;
        }
        @media (max-width: 540px) {
            .toc ul {
                columns: 1;
            }
        }
        .img-card {
            margin: 32px 0;
            border-radius: 16px;
            overflow: hidden;
            background: #f3f7fe;
            padding: 12px;
            border: 1px solid #e3ebf5;
        }
        .img-card figcaption {
            padding: 12px 8px 4px;
            font-size: 0.9rem;
            color: #4a5a77;
            font-style: italic;
            text-align: center;
        }
        .rate-area {
            display: flex;
            flex-direction: row-reverse;
            gap: 6px;
            justify-content: flex-end;
            margin: 8px 0 16px;
        }
        .rate-area input {
            display: none;
        }
        .rate-area label {
            font-size: 2rem;
            color: #ccd7e8;
            cursor: pointer;
            transition: color 0.15s;
        }
        .rate-area label:hover,
        .rate-area label:hover~label,
        .rate-area input:checked~label {
            color: #f5b342;
        }
        .score-form button {
            background: #1a6dd4;
            color: #fff;
            border: none;
            padding: 8px 28px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .score-form button:hover {
            background: #0b3d7a;
        }
        .comment-form textarea {
            width: 100%;
            border: 1px solid #dce4ef;
            border-radius: 12px;
            padding: 14px 16px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            background: #fafcff;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #1a6dd4;
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 109, 212, 0.1);
        }
        .comment-form button {
            background: #1a6dd4;
            color: #fff;
            border: none;
            padding: 10px 32px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            margin-top: 8px;
        }
        .comment-form button:hover {
            background: #0b3d7a;
        }
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            padding: 4px 0 12px;
        }
        .link-list a {
            background: #f1f5fb;
            padding: 4px 16px 4px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            border: 1px solid #dce4ef;
            transition: background 0.2s, border-color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .link-list a:hover {
            background: #e3ebf5;
            border-color: #1a6dd4;
            text-decoration: none;
        }
        friend-link {
            display: block;
            padding: 20px 0 8px;
            border-top: 2px solid #eef2f7;
            margin-top: 28px;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 12px;
            background: #f1f5fb;
            border-radius: 30px;
            border: 1px solid #dce4ef;
            font-weight: 500;
        }
        friend-link a:hover {
            background: #e3ebf5;
            border-color: #1a6dd4;
            text-decoration: none;
        }
        .footer {
            padding: 24px 0 16px;
            font-size: 0.85rem;
            color: #5e6f8d;
            border-top: 2px solid #eef2f7;
            margin-top: 32px;
            text-align: center;
        }
        .footer small {
            display: block;
            margin-top: 6px;
        }
        .mt-1 {
            margin-top: 20px;
        }
        .mb-1 {
            margin-bottom: 20px;
        }
        .flex {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .flex-1 {
            flex: 1 1 260px;
        }
        .badge {
            display: inline-block;
            background: #e8edf5;
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #1e2a3a;
        }
        .highlight {
            background: #fef9e7;
            padding: 2px 8px;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-lg {
            font-size: 1.8rem;
        }
        hr {
            border: none;
            border-top: 2px solid #eef2f7;
            margin: 32px 0;
        }
        .update-badge {
            background: #e8edf5;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            display: inline-block;
            color: #1e2a3a;
        }