*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.75;
            padding: 0 1rem;
        }
        a {
            color: #0f3b5e;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1e7e34;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0b2a3b, #1a4a5f);
            color: #fff;
            padding: 1rem 0;
            border-radius: 0 0 24px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
            margin-bottom: 2rem;
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7d875, #f5b342);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 8px rgba(245, 179, 66, 0.3);
            transition: transform 0.25s ease;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #f5b342;
            margin-right: 0.3rem;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .nav-links li a {
            color: #f0f9ff;
            font-weight: 500;
            padding: 0.4rem 0.8rem;
            border-radius: 40px;
            transition: background 0.25s, color 0.25s;
            font-size: 0.95rem;
        }
        .nav-links li a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #f7d875;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            transition: opacity 0.2s;
        }
        .hamburger:hover {
            opacity: 0.75;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 0 auto 1.5rem auto;
            padding: 0.6rem 1rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 40px;
            backdrop-filter: blur(2px);
            font-size: 0.85rem;
            color: #cbd5e1;
        }
        .breadcrumb a {
            color: #f7d875;
        }
        .breadcrumb a:hover {
            color: #fff;
            text-decoration: none;
        }
        .breadcrumb span {
            color: #94a3b8;
        }
        .main-content {
            max-width: 1200px;
            margin: 0 auto 2rem auto;
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
        }
        .article-body {
            background: #fff;
            border-radius: 24px;
            padding: 2.5rem 2.8rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }
        .article-body h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.2rem;
            color: #0b2a3b;
            border-left: 6px solid #f5b342;
            padding-left: 1.2rem;
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 2.4rem 0 1rem 0;
            color: #1a4a5f;
            border-bottom: 2px solid #e9f0f5;
            padding-bottom: 0.5rem;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 1.8rem 0 0.8rem 0;
            color: #1e5870;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.4rem 0 0.5rem 0;
            color: #2c6a82;
        }
        .article-body p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #1e293b;
        }
        .article-body ul,
        .article-body ol {
            margin: 0.8rem 0 1.4rem 2rem;
        }
        .article-body li {
            margin-bottom: 0.4rem;
            font-size: 1.02rem;
        }
        .article-body strong {
            color: #0b2a3b;
            font-weight: 700;
        }
        .article-body blockquote {
            border-left: 5px solid #f5b342;
            background: #fdf8ee;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border-radius: 0 16px 16px 0;
            font-style: italic;
            color: #2d3f4e;
        }
        .feature-img {
            margin: 2rem 0;
            border-radius: 16px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1);
        }
        .last-updated {
            display: inline-block;
            background: #e9f0f5;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #475569;
            margin-bottom: 1.8rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
            color: #f5b342;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0b2a3b;
            margin-bottom: 1rem;
            border-bottom: 2px solid #e9f0f5;
            padding-bottom: 0.5rem;
        }
        .sidebar-links {
            list-style: none;
            padding: 0;
        }
        .sidebar-links li {
            margin-bottom: 0.6rem;
        }
        .sidebar-links li a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.5rem 0.8rem;
            border-radius: 10px;
            background: #f8fafc;
            transition: background 0.2s, transform 0.15s;
            font-weight: 500;
            color: #1a4a5f;
        }
        .sidebar-links li a:hover {
            background: #e9f0f5;
            transform: translateX(4px);
            text-decoration: none;
            color: #0b2a3b;
        }
        .sidebar-links li a i {
            color: #f5b342;
            width: 1.2rem;
            text-align: center;
        }
        .tools-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.5rem 0;
            background: #f1f6fa;
            padding: 2rem 2.2rem;
            border-radius: 24px;
        }
        .tool-box {
            background: #fff;
            border-radius: 18px;
            padding: 1.5rem 1.8rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .tool-box h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0b2a3b;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .tool-box h4 i {
            color: #f5b342;
        }
        .tool-box form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }
        .tool-box input,
        .tool-box textarea,
        .tool-box select {
            flex: 1 1 200px;
            padding: 0.7rem 1rem;
            border: 1px solid #d1d9e2;
            border-radius: 40px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s, box-shadow 0.2s;
        }
        .tool-box input:focus,
        .tool-box textarea:focus,
        .tool-box select:focus {
            outline: none;
            border-color: #f5b342;
            box-shadow: 0 0 0 3px rgba(245, 179, 66, 0.2);
        }
        .tool-box textarea {
            border-radius: 16px;
            min-height: 80px;
            resize: vertical;
        }
        .tool-box button {
            background: #0b2a3b;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .tool-box button:hover {
            background: #1a4a5f;
            transform: translateY(-2px);
        }
        .tool-box button i {
            font-size: 0.9rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d1d9e2;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars i.active,
        .rating-stars i:hover,
        .rating-stars i:hover~i {
            color: #f5b342;
        }
        .rating-stars i {
            transition: color 0.15s;
        }
        .site-footer {
            background: #0b2a3b;
            color: #cbd5e1;
            padding: 2.5rem 1rem 1.8rem;
            border-radius: 24px 24px 0 0;
            margin-top: 2rem;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-col {
            flex: 1 1 240px;
        }
        .footer-col h4 {
            color: #f7d875;
            font-size: 1.1rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .footer-col a {
            color: #cbd5e1;
            display: block;
            margin-bottom: 0.4rem;
        }
        .footer-col a:hover {
            color: #f7d875;
            text-decoration: none;
        }
        friend-link {
            display: block;
            padding: 1.2rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 1.5rem;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        friend-link a {
            color: #f7d875;
            margin: 0 0.4rem;
        }
        friend-link a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.2rem;
            font-size: 0.85rem;
            color: #64748b;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 1.2rem;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .tools-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(11, 42, 59, 0.95);
                border-radius: 16px;
                padding: 1rem 0.8rem;
                margin-top: 0.8rem;
                gap: 0.4rem;
                backdrop-filter: blur(8px);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 0.6rem 1rem;
                border-radius: 8px;
            }
            .article-body {
                padding: 1.8rem 1.2rem;
            }
            .article-body h1 {
                font-size: 2rem;
                padding-left: 0.8rem;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .article-body h3 {
                font-size: 1.25rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .tools-grid {
                padding: 1.2rem;
            }
            .tool-box {
                padding: 1.2rem;
            }
            .footer-inner {
                flex-direction: column;
                gap: 1.2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .article-body {
                padding: 1.2rem 0.8rem;
            }
            .tool-box form {
                flex-direction: column;
                align-items: stretch;
            }
            .tool-box input,
            .tool-box textarea,
            .tool-box select,
            .tool-box button {
                width: 100%;
            }
            .rating-stars {
                font-size: 1.4rem;
            }
        }
        .text-highlight {
            background: linear-gradient(120deg, #fdf8ee 0%, #fdf8ee 40%, #f7d875 100%);
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-bullet {
            margin-right: 0.4rem;
        }
        .inline-link {
            font-weight: 600;
            color: #1a4a5f;
            border-bottom: 2px solid #f5b342;
            padding-bottom: 1px;
        }
        .inline-link:hover {
            color: #0b2a3b;
            border-bottom-color: #0b2a3b;
            text-decoration: none;
        }
        .anchor-offset {
            scroll-margin-top: 2rem;
        }