* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #FF6B00;
            --primary-dark: #e05e00;
            --secondary: #1a1a2e;
            --accent: #e94560;
            --light-bg: #f4f6f9;
            --card-bg: #ffffff;
            --text: #222;
            --text-light: #555;
            --border: #e0e0e0;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --max-width: 1200px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--light-bg);
            color: var(--text);
            line-height: 1.8;
            padding: 0 0 0 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            display: block;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--secondary);
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #FF6B00, #ff9a44);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            -webkit-text-fill-color: #FF6B00;
            color: #FF6B00;
            font-size: 1.4rem;
        }
        .my-logo small {
            font-size: 0.5rem;
            -webkit-text-fill-color: #aaa;
            color: #aaa;
            display: block;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-list a {
            color: #ddd;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: all 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a:hover {
            background: rgba(255, 107, 0, 0.2);
            color: #fff;
            text-decoration: none;
        }
        .nav-list a i {
            font-size: 0.85rem;
            color: var(--primary);
        }
        .hamburger {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
            font-size: 0.88rem;
        }
        .breadcrumb-wrap .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-wrap a {
            color: var(--text-light);
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap span {
            color: var(--text-light);
        }
        .breadcrumb-wrap .sep {
            color: #bbb;
            margin: 0 4px;
        }
        .main-content {
            flex: 1;
            padding: 30px 0 50px;
        }
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 35px 40px;
            margin-bottom: 30px;
        }
        .article-card h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--secondary);
        }
        .article-card h1 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }
        .meta-line i {
            margin-right: 5px;
            color: var(--primary);
        }
        .last-updated {
            font-weight: 600;
            color: var(--primary-dark);
        }
        .article-card h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--secondary);
            border-left: 5px solid var(--primary);
            padding-left: 18px;
        }
        .article-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 30px 0 12px;
            color: #2a2a3e;
        }
        .article-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 20px 0 10px;
            color: #3a3a4e;
        }
        .article-card p {
            margin-bottom: 16px;
            font-size: 1.02rem;
            color: #3a3a3a;
        }
        .article-card ul,
        .article-card ol {
            margin: 12px 0 20px 24px;
            color: #3a3a3a;
        }
        .article-card li {
            margin-bottom: 8px;
            font-size: 1.01rem;
        }
        .highlight-box {
            background: #fff7ed;
            border-left: 5px solid var(--primary);
            padding: 18px 22px;
            border-radius: 8px;
            margin: 24px 0;
        }
        .highlight-box strong {
            color: var(--primary-dark);
        }
        .hero-img-wrap {
            margin: 24px 0 30px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: #eaeaea;
            position: relative;
        }
        .hero-img-wrap img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .hero-img-wrap .img-caption {
            background: rgba(0, 0, 0, 0.7);
            color: #eee;
            padding: 10px 18px;
            font-size: 0.9rem;
            text-align: center;
        }
        .pro-tip {
            background: #e8f4fd;
            border-radius: 10px;
            padding: 18px 22px;
            margin: 20px 0;
            border-left: 5px solid var(--secondary);
        }
        .pro-tip strong {
            color: var(--secondary);
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .stat-card {
            background: var(--light-bg);
            padding: 16px 14px;
            border-radius: 10px;
            text-align: center;
            border: 1px solid var(--border);
        }
        .stat-card .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .btn-secondary {
            background: var(--secondary);
        }
        .btn-secondary:hover {
            background: #2a2a4e;
        }
        .search-section {
            margin: 30px 0 20px;
        }
        .search-form {
            display: flex;
            gap: 10px;
            max-width: 560px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            padding: 14px 20px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            min-width: 180px;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            padding: 14px 28px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0 20px;
        }
        .feedback-card {
            background: #f9fafc;
            border-radius: var(--radius);
            padding: 24px 26px;
            border: 1px solid var(--border);
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 12px;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 12px 16px;
            border: 1.5px solid var(--border);
            border-radius: 8px;
            font-size: 0.96rem;
            font-family: var(--font);
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: var(--primary);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn {
            align-self: flex-start;
            padding: 10px 24px;
            font-size: 0.95rem;
        }
        .star-select {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #ddd;
            cursor: pointer;
            direction: rtl;
        }
        .star-select input {
            display: none;
        }
        .star-select label {
            transition: color 0.2s;
            color: #ddd;
        }
        .star-select input:checked~label,
        .star-select label:hover,
        .star-select label:hover~label {
            color: #ffb400;
        }
        friend-link {
            display: block;
            padding: 20px 0 10px;
        }
        friend-link .flist {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            list-style: none;
            padding: 0;
            margin: 10px 0 0;
        }
        friend-link .flist li a {
            font-size: 0.95rem;
            background: #f0f2f5;
            padding: 6px 18px;
            border-radius: 30px;
            transition: background 0.25s;
            display: inline-block;
        }
        friend-link .flist li a:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
        }
        .site-footer {
            background: var(--secondary);
            color: #ccc;
            padding: 32px 0 24px;
            margin-top: 20px;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .site-footer .copyright {
            font-size: 0.9rem;
            text-align: center;
            border-top: 1px solid #333;
            padding-top: 18px;
            color: #999;
        }
        .site-footer .copyright strong {
            color: #ddd;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px 28px;
            font-size: 0.92rem;
        }
        .footer-links a {
            color: #bbb;
        }
        .footer-links a:hover {
            color: #fff;
        }
        @media (max-width: 992px) {
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .article-card {
                padding: 24px 20px;
            }
            .article-card h1 {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 16px 0 8px;
                gap: 12px;
            }
            .nav-wrap.open {
                display: flex;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
                gap: 4px;
            }
            .nav-list a {
                padding: 10px 16px;
                border-radius: 8px;
                justify-content: flex-start;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .article-card h1 {
                font-size: 1.4rem;
            }
            .article-card h2 {
                font-size: 1.3rem;
                padding-left: 12px;
            }
            .article-card h3 {
                font-size: 1.1rem;
            }
            .article-card {
                padding: 18px 14px;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                min-width: auto;
            }
            .meta-line {
                font-size: 0.82rem;
                gap: 10px;
            }
            .breadcrumb-wrap {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card .num {
                font-size: 1.4rem;
            }
            .feedback-card {
                padding: 16px 14px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .article-card p {
                font-size: 0.96rem;
            }
        }
        .section-anchor {
            scroll-margin-top: 90px;
        }
        .hamburger .fa-times {
            display: none;
        }
        .hamburger.active .fa-bars {
            display: none;
        }
        .hamburger.active .fa-times {
            display: inline;
        }