*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f4f7fb;
            color: #1a2634;
            line-height: 1.7;
            font-size: 1.0625rem;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #0057b3;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #e65c00;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0b1a2a;
        }
        h1 {
            font-size: 2.2rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.75rem;
            margin-top: 2.8rem;
            margin-bottom: 0.6rem;
            border-left: 5px solid #ff6a00;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 2rem;
            margin-bottom: 0.4rem;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.4rem;
            margin-bottom: 0.3rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2a 0%, #1a2f44 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #ffb347;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(255, 179, 71, 0.3);
            transition: transform 0.3s ease;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #ffc75f;
        }
        .my-logo small {
            font-size: 0.75rem;
            display: block;
            color: #aac9e8;
            font-weight: 400;
            letter-spacing: 1px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .main-nav a {
            color: #e2ecf7;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.3s, color 0.3s;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #ffb347;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 6px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.3s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .breadcrumb {
            background: #eaf0f8;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d4e0ec;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "▸";
            color: #8a9bb0;
            margin-right: 0.6rem;
        }
        .breadcrumb a {
            color: #0057b3;
        }
        .breadcrumb .current {
            color: #6a7b8e;
            font-weight: 500;
        }
        .page-main {
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .sidebar {
            background: #ffffff;
            border-radius: 18px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #ff6a00;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 0.6rem;
        }
        .sidebar a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.4rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .sidebar a:hover {
            background: #f0f5fe;
            text-decoration: none;
        }
        .sidebar a i {
            color: #ff6a00;
            width: 20px;
            text-align: center;
        }
        .search-box {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e6edf5;
        }
        .search-box form {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .search-box input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #dce6f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-box input[type="text"]:focus {
            border-color: #ff6a00;
        }
        .search-box button {
            background: #ff6a00;
            color: #fff;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #e65c00;
            transform: scale(1.02);
        }
        .interaction-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        @media (max-width: 600px) {
            .interaction-panel {
                grid-template-columns: 1fr;
            }
        }
        .comment-box,
        .rating-box {
            background: #ffffff;
            border-radius: 18px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
            border: 1px solid #eaf1fa;
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-box textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #dce6f0;
            border-radius: 14px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 100px;
            font-family: inherit;
            transition: border 0.3s;
            outline: none;
        }
        .comment-box textarea:focus {
            border-color: #ff6a00;
        }
        .comment-box input[type="text"] {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce6f0;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
        }
        .comment-box input[type="text"]:focus {
            border-color: #ff6a00;
        }
        .comment-box .form-group {
            margin-bottom: 0.8rem;
        }
        .comment-box button,
        .rating-box button {
            background: #0b1a2a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            font-size: 0.95rem;
        }
        .comment-box button:hover,
        .rating-box button:hover {
            background: #1f3a55;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin: 0.6rem 0 1rem;
            flex-wrap: wrap;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.2s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #ffb347;
            transform: scale(1.15);
        }
        .rating-stars i.selected {
            color: #ff8c00;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            background: #fff;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #0b1a2a;
            color: #fff;
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #eceff5;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #f7faff;
        }
        .site-footer {
            background: #0b1a2a;
            color: #c6d6e8;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
            }
        }
        .footer-inner h4 {
            color: #ffb347;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #aac9e8;
        }
        .footer-inner a:hover {
            color: #ffb347;
        }
        friend-link {
            display: block;
            margin-top: 0.8rem;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.3rem;
        }
        .copyright {
            text-align: center;
            border-top: 1px solid #1f3a55;
            padding-top: 1.5rem;
            margin-top: 2rem;
            font-size: 0.85rem;
            color: #8aa3c0;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0b1a2a;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid #1f3a55;
                margin-top: 0.8rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                border-radius: 0;
                border-bottom: 1px solid #1a2f44;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .sidebar {
                position: static;
                margin-top: 2rem;
            }
        }
        .badge {
            display: inline-block;
            background: #ff6a00;
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .last-updated {
            display: block;
            text-align: right;
            font-size: 0.85rem;
            color: #6a7b8e;
            margin-top: -0.5rem;
            margin-bottom: 1.5rem;
        }
        .feature-box {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.5rem 1.8rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
            margin: 1.8rem 0;
            border-left: 5px solid #ff6a00;
        }
        .feature-box h4 {
            margin-top: 0;
        }
        .emoji-lg {
            font-size: 1.6rem;
            margin-right: 6px;
        }
        .highlight {
            background: #fff6e5;
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .image-caption {
            font-size: 0.85rem;
            color: #6a7b8e;
            text-align: center;
            margin-top: 6px;
            font-style: italic;
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #ff6a00;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 6px 20px rgba(255, 106, 0, 0.35);
            cursor: pointer;
            transition: transform 0.3s, opacity 0.3s;
            opacity: 0;
            pointer-events: none;
            border: none;
            z-index: 999;
        }
        .scroll-top.visible {
            opacity: 1;
            pointer-events: all;
        }
        .scroll-top:hover {
            transform: scale(1.1);
        }