* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --bg-dark: #0b0e14;
            --bg-card: #141a24;
            --bg-card2: #1a2230;
            --accent: #f5a623;
            --accent2: #e8912d;
            --text-primary: #f0f2f5;
            --text-secondary: #a8b2c4;
            --text-muted: #6b7a8f;
            --border-color: #2a3444;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
            --radius: 12px;
            --radius-sm: 6px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s, opacity 0.25s;
        }
        a:hover {
            color: #ffc453;
            opacity: 0.9;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(11, 14, 20, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--accent), #ff7b00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--accent);
            margin-right: 6px;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }
        .nav-desktop li a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.3s, color 0.3s;
        }
        .nav-desktop li a:hover,
        .nav-desktop li a.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            z-index: 110;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        .nav-mobile {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(11, 14, 20, 0.98);
            backdrop-filter: blur(16px);
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding: 40px 24px;
            gap: 20px;
            z-index: 99;
            overflow-y: auto;
            list-style: none;
            transform: translateY(-120%);
            transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        }
        .nav-mobile.open {
            transform: translateY(0);
        }
        .nav-mobile li a {
            font-size: 1.3rem;
            color: var(--text-secondary);
            font-weight: 600;
            padding: 12px 0;
            display: block;
            border-bottom: 1px solid var(--border-color);
            width: 100%;
            text-align: center;
        }
        .nav-mobile li a:hover {
            color: var(--accent);
        }
        .breadcrumb {
            padding: 14px 0 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span.sep {
            color: var(--text-muted);
            opacity: 0.5;
        }
        main {
            padding: 20px 0 60px;
        }
        article {
            max-width: 880px;
            margin: 0 auto;
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 16px 0 12px;
            background: linear-gradient(135deg, #fff 30%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 48px 0 16px;
            color: var(--accent);
            border-left: 4px solid var(--accent);
            padding-left: 16px;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text-primary);
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 24px 0 10px;
            color: var(--text-secondary);
        }
        p {
            margin-bottom: 18px;
            color: var(--text-secondary);
            font-size: 1.02rem;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            color: var(--text-muted);
            font-size: 0.92rem;
            margin: 8px 0 24px;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border-color);
        }
        .meta-info i {
            margin-right: 6px;
            color: var(--accent);
        }
        .last-updated {
            font-weight: 600;
            color: var(--accent);
        }
        .feature-img {
            margin: 28px 0 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: var(--bg-card);
        }
        .feature-img img {
            width: 100%;
            min-height: 220px;
            object-fit: cover;
        }
        .feature-img figcaption {
            padding: 12px 18px;
            font-size: 0.88rem;
            color: var(--text-muted);
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
        }
        .highlight-box {
            background: var(--bg-card);
            border-left: 4px solid var(--accent);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .highlight-box p {
            margin-bottom: 0;
        }
        .highlight-box strong {
            color: var(--accent);
        }
        .pro-tip {
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.08), rgba(255, 123, 0, 0.04));
            border: 1px solid rgba(245, 166, 35, 0.25);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin: 24px 0;
        }
        .pro-tip i {
            color: var(--accent);
            margin-right: 10px;
        }
        .pro-tip strong {
            color: var(--accent);
        }
        ul,
        ol {
            padding-left: 24px;
            margin-bottom: 20px;
            color: var(--text-secondary);
        }
        ul li,
        ol li {
            margin-bottom: 8px;
        }
        ul li strong,
        ol li strong {
            color: var(--text-primary);
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            min-width: 540px;
        }
        th,
        td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        th {
            background: var(--bg-card2);
            color: var(--accent);
            font-weight: 600;
        }
        td {
            color: var(--text-secondary);
        }
        tr:last-child td {
            border-bottom: none;
        }
        .search-section {
            margin: 48px 0 32px;
            padding: 28px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
        }
        .search-section h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background: var(--bg-dark);
            color: var(--text-primary);
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: var(--accent);
        }
        .search-form button {
            padding: 14px 32px;
            background: var(--accent);
            color: #0b0e14;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s, transform 0.2s;
        }
        .search-form button:hover {
            background: var(--accent2);
            transform: scale(1.02);
        }
        .search-form button i {
            margin-right: 8px;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 48px 0 32px;
        }
        @media (max-width:768px) {
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        .feedback-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .feedback-card h3 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .feedback-form input,
        .feedback-form textarea,
        .feedback-form select {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background: var(--bg-dark);
            color: var(--text-primary);
            font-size: 0.95rem;
            margin-bottom: 14px;
            outline: none;
            font-family: var(--font);
            transition: border 0.3s;
        }
        .feedback-form input:focus,
        .feedback-form textarea:focus,
        .feedback-form select:focus {
            border-color: var(--accent);
        }
        .feedback-form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-form button {
            padding: 12px 28px;
            background: var(--accent);
            color: #0b0e14;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s, transform 0.2s;
            width: 100%;
        }
        .feedback-form button:hover {
            background: var(--accent2);
            transform: scale(1.01);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin-bottom: 14px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: var(--text-muted);
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: var(--accent);
        }
        footer {
            border-top: 1px solid var(--border-color);
            padding: 40px 0 30px;
            background: rgba(11, 14, 20, 0.8);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        @media (max-width:768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand .my-logo {
            font-size: 1.4rem;
            display: inline-block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: var(--text-muted);
        }
        .footer-links h4,
        .footer-friend h4 {
            color: var(--accent);
            font-size: 1.05rem;
            margin-bottom: 12px;
        }
        .footer-links ul,
        .footer-friend ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links ul li,
        .footer-friend ul li {
            margin-bottom: 6px;
        }
        .footer-links ul li a,
        .footer-friend ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.25s;
        }
        .footer-links ul li a:hover,
        .footer-friend ul li a:hover {
            color: var(--accent);
        }
        friend-link {
            display: block;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        friend-link ul li {
            margin-bottom: 6px;
        }
        friend-link ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        friend-link ul li a:hover {
            color: var(--accent);
        }
        .copyright {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .copyright strong {
            color: var(--text-secondary);
        }
        @media (max-width:900px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-mobile {
                display: flex;
            }
            .header-inner {
                padding: 0 4px;
            }
            .my-logo {
                font-size: 1.2rem;
            }
        }
        @media (max-width:480px) {
            .container {
                padding: 0 14px;
            }
            h1 {
                font-size: 1.8rem;
            }
            .search-form button {
                padding: 12px 20px;
                width: 100%;
            }
            .feedback-card {
                padding: 20px 16px;
            }
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-700 {
            font-weight: 700;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .gap-4 {
            gap: 4px;
        }
        .img-placeholder {
            background: linear-gradient(135deg, var(--bg-card2), var(--bg-card));
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 260px;
            color: var(--text-muted);
            font-size: 1.2rem;
            border-radius: var(--radius-sm);
        }
        .img-placeholder i {
            font-size: 3rem;
            margin-right: 12px;
            color: var(--accent);
        }