*,
        *::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, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
            background: #0d0f14;
            color: #e8edf5;
            line-height: 1.75;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #f0b429;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #ffd966;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #f5f7fc;
            margin-top: 0;
        }
        h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: clamp(1.4rem, 3vw, 2rem);
            margin-bottom: 0.6rem;
            border-left: 4px solid #f0b429;
            padding-left: 1rem;
        }
        h3 {
            font-size: clamp(1.15rem, 2.2vw, 1.5rem);
            margin-bottom: 0.5rem;
        }
        h4 {
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
            color: #d4dcec;
        }
        p {
            margin-bottom: 1.2rem;
            color: #d0d7e5;
        }
        ul,
        ol {
            margin-bottom: 1.2rem;
            padding-left: 1.6rem;
            color: #d0d7e5;
        }
        li {
            margin-bottom: 0.4rem;
        }
        strong,
        b {
            color: #f5f7fc;
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: #161a22;
            border-bottom: 2px solid #2a2f3a;
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0.6rem 0;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.6rem 1rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f0b429, #fada5e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #f0b429;
            font-size: 1.4rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #e8edf5;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #2a2f3a;
        }
        .primary-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem 1.2rem;
            flex-wrap: wrap;
        }
        .primary-nav a {
            color: #c8d0df;
            font-size: 0.92rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.25s, color 0.25s;
            font-weight: 500;
        }
        .primary-nav a:hover {
            color: #f0b429;
            border-bottom-color: #f0b429;
            text-decoration: none;
        }
        .primary-nav a i {
            margin-right: 0.3rem;
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: #1a1f29;
            padding: 0.7rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #252b36;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #6b7a93;
        }
        .breadcrumb a {
            color: #a0b0c8;
        }
        .breadcrumb a:hover {
            color: #f0b429;
        }
        .breadcrumb .current {
            color: #f0b429;
            font-weight: 600;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0 3rem;
        }
        .article-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media(max-width:992px) {
            .article-wrap {
                grid-template-columns: 1fr;
            }
        }
        .article-body h2 {
            margin-top: 2.2rem;
        }
        .article-body h3 {
            margin-top: 1.6rem;
        }
        .article-body h4 {
            margin-top: 1.2rem;
        }
        .featured-img {
            margin: 1.8rem 0 2.2rem;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
            background: #1a1f29;
        }
        .featured-img img {
            width: 100%;
            min-height: 200px;
            object-fit: cover;
        }
        .featured-img figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.85rem;
            color: #8f9eb5;
            background: #1a1f29;
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #1e2532;
            padding: 0.4rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #a0b0c8;
            border: 1px solid #2a3140;
            margin-bottom: 1.2rem;
        }
        .update-badge i {
            color: #f0b429;
        }
        .highlight-box {
            background: #1a212e;
            border-left: 4px solid #f0b429;
            padding: 1.2rem 1.6rem;
            margin: 1.6rem 0;
            border-radius: 0 12px 12px 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .pro-tip {
            background: #1a2835;
            border: 1px solid #2a3f4a;
            padding: 1.2rem 1.6rem;
            margin: 1.6rem 0;
            border-radius: 12px;
            position: relative;
        }
        .pro-tip::before {
            content: "💡 Pro Tip";
            font-weight: 700;
            color: #f0b429;
            display: block;
            margin-bottom: 0.4rem;
            font-size: 0.95rem;
        }
        .link-list-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 1rem;
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 1.2rem;
        }
        .link-list-inline li::before {
            content: "🔗";
            margin-right: 0.3rem;
            font-size: 0.8rem;
        }
        .link-list-inline a {
            font-weight: 500;
        }
        .sidebar {
            position: sticky;
            top: 5.2rem;
            align-self: start;
        }
        .sidebar-card {
            background: #161b24;
            border-radius: 14px;
            padding: 1.4rem 1.2rem;
            margin-bottom: 1.6rem;
            border: 1px solid #252c38;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
            color: #f0b429;
            border-bottom: 1px solid #252c38;
            padding-bottom: 0.6rem;
        }
        .sidebar-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-links li {
            margin-bottom: 0.5rem;
            padding: 0.25rem 0;
            border-bottom: 1px solid #1f2531;
        }
        .sidebar-links a {
            font-size: 0.88rem;
            display: block;
            padding: 0.2rem 0;
        }
        .sidebar-links a i {
            margin-right: 0.4rem;
            font-size: 0.75rem;
            color: #f0b429;
        }
        .search-form {
            display: flex;
            gap: 0.4rem;
            margin: 0.6rem 0;
        }
        .search-form input {
            flex: 1;
            padding: 0.6rem 1rem;
            border-radius: 30px;
            border: 1px solid #2a3140;
            background: #0d111a;
            color: #e8edf5;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: #f0b429;
        }
        .search-form button {
            background: #f0b429;
            border: none;
            border-radius: 30px;
            padding: 0.6rem 1.2rem;
            color: #0d0f14;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #f7c94b;
            transform: scale(1.02);
        }
        .feedback-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid #252c38;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        @media(max-width:700px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: #161b24;
            border-radius: 14px;
            padding: 1.6rem;
            border: 1px solid #252c38;
        }
        .feedback-card h3 {
            font-size: 1.1rem;
            margin-bottom: 1rem;
            color: #f0b429;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-size: 0.88rem;
            font-weight: 500;
            margin-bottom: 0.3rem;
            color: #b8c4d8;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.6rem 1rem;
            border-radius: 8px;
            border: 1px solid #2a3140;
            background: #0d111a;
            color: #e8edf5;
            font-size: 0.9rem;
            font-family: inherit;
            outline: none;
            transition: border 0.25s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #f0b429;
        }
        .form-group textarea {
            min-height: 80px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 0.3rem;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.6rem;
            color: #3a4252;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f0b429;
        }
        .btn-submit {
            background: #f0b429;
            border: none;
            border-radius: 30px;
            padding: 0.7rem 2rem;
            color: #0d0f14;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-submit:hover {
            background: #f7c94b;
            transform: translateY(-2px);
        }
        .site-footer {
            background: #0f131c;
            border-top: 2px solid #1e2532;
            padding: 2.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media(max-width:700px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand .my-logo {
            font-size: 1.3rem;
            margin-bottom: 0.6rem;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: #8f9eb5;
        }
        .footer-links h4,
        .footer-friend h4 {
            font-size: 0.95rem;
            color: #f0b429;
            margin-bottom: 0.8rem;
        }
        .footer-links ul,
        .footer-friend ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li,
        .footer-friend li {
            margin-bottom: 0.4rem;
        }
        .footer-links a,
        .footer-friend a {
            font-size: 0.85rem;
            color: #a0b0c8;
        }
        .footer-links a:hover,
        .footer-friend a:hover {
            color: #f0b429;
        }
        .copyright {
            border-top: 1px solid #1e2532;
            padding-top: 1.4rem;
            text-align: center;
            font-size: 0.82rem;
            color: #6b7a93;
        }
        .copyright a {
            color: #a0b0c8;
        }
        .copyright a:hover {
            color: #f0b429;
        }
        friend-link {
            display: block;
            margin: 0.8rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
            padding: 0.2rem 0.8rem;
            background: #1a212e;
            border-radius: 20px;
            font-size: 0.82rem;
            border: 1px solid #252c38;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #252c38;
            text-decoration: none;
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0 0.4rem;
                gap: 0.3rem;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 0.5rem 0.6rem;
                border-bottom: 1px solid #1e2532;
            }
            .primary-nav a i {
                width: 1.2rem;
            }
            .header-inner {
                padding: 0.2rem 0;
            }
            .breadcrumb ul {
                font-size: 0.78rem;
            }
            .sidebar {
                position: static;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @media(max-width:480px) {
            .container {
                padding: 0 0.9rem;
            }
            .article-body {
                font-size: 0.95rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #f0b429;
            color: #0d0f14;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            border: none;
            box-shadow: 0 4px 16px rgba(240, 180, 41, 0.3);
            transition: transform 0.25s, opacity 0.25s;
            opacity: 0;
            pointer-events: none;
            z-index: 99;
        }
        .scroll-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .scroll-top:hover {
            transform: scale(1.1);
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 1rem;
            background: #f0b429;
            color: #0d0f14;
            padding: 0.5rem 1.2rem;
            border-radius: 0 0 8px 8px;
            font-weight: 600;
            z-index: 200;
            transition: top 0.25s;
        }
        .skip-link:focus {
            top: 0;
            text-decoration: none;
        }
        @media print {
            .site-header,
            .site-footer,
            .sidebar,
            .feedback-section,
            .scroll-top,
            .nav-toggle {
                display: none !important;
            }
            .article-wrap {
                grid-template-columns: 1fr;
            }
            body {
                background: #fff;
                color: #111;
            }
            .article-body p,
            .article-body li {
                color: #222;
            }
        }