*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --c-primary: #0a0a23;
            --c-secondary: #1a1a4e;
            --c-accent: #ff5500;
            --c-accent2: #ffcd00;
            --c-bg: #f4f7fc;
            --c-surface: #ffffff;
            --c-text: #1a1a2e;
            --c-text-light: #555;
            --c-border: #dde3ed;
            --c-success: #00c853;
            --c-star: #ffb300;
            --radius: 14px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
            --transition: 0.25s ease;
            --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--c-bg);
            color: var(--c-text);
            line-height: 1.7;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        a {
            color: var(--c-accent);
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: #cc4400;
            text-decoration: none;
        }
        a:focus-visible {
            outline: 3px solid var(--c-accent2);
            outline-offset: 4px;
            border-radius: 4px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--c-primary);
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        h1 {
            font-size: clamp(2.2rem, 6vw, 3.4rem);
            margin-bottom: 0.6rem;
        }
        h2 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            margin-top: 2.4rem;
            margin-bottom: 0.8rem;
            border-bottom: 4px solid var(--c-accent2);
            padding-bottom: 0.3rem;
            display: inline-block;
        }
        h3 {
            font-size: clamp(1.2rem, 3vw, 1.6rem);
            margin-top: 2rem;
            margin-bottom: 0.5rem;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.5rem;
            margin-bottom: 0.3rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #2a2a3e;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--c-primary);
            color: #fff;
            padding: 16px 0 12px;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px 16px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--c-accent2);
            text-decoration: none;
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            padding: 4px 16px 4px 12px;
            border-radius: 40px;
            transition: background var(--transition);
        }
        .my-logo:hover {
            background: rgba(255, 255, 255, 0.14);
            color: var(--c-accent2);
        }
        .my-logo i {
            font-size: 2rem;
            color: var(--c-accent);
        }
        .my-logo span {
            font-size: 0.7rem;
            font-weight: 400;
            color: #aaa;
            margin-left: 4px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 18px;
            list-style: none;
        }
        .nav-menu li a {
            color: #eee;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 4px 2px;
            border-bottom: 2px solid transparent;
            transition: border-color var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-menu li a:hover {
            color: var(--c-accent2);
            border-bottom-color: var(--c-accent2);
        }
        .breadcrumb {
            background: var(--c-surface);
            padding: 12px 0;
            border-bottom: 1px solid var(--c-border);
            font-size: 0.9rem;
            color: var(--c-text-light);
        }
        .breadcrumb-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-wrap a {
            color: var(--c-accent);
            text-decoration: none;
        }
        .breadcrumb-wrap a:hover {
            text-decoration: underline;
        }
        .breadcrumb-wrap span {
            color: var(--c-text-light);
        }
        .breadcrumb-wrap .sep {
            color: #bbb;
            margin: 0 4px;
        }
        .main-wrap {
            padding: 30px 0 50px;
        }
        .article-card {
            background: var(--c-surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 30px 28px;
            margin-bottom: 30px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 0.9rem;
            color: var(--c-text-light);
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px dashed var(--c-border);
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--c-accent);
        }
        .last-updated {
            font-weight: 600;
            color: var(--c-primary);
        }
        .hero-img-wrap {
            margin: 20px 0 28px;
            border-radius: var(--radius);
            overflow: hidden;
            background: #eef2f7;
            position: relative;
        }
        .hero-img-wrap img {
            width: 100%;
            max-height: 520px;
            object-fit: cover;
        }
        .hero-img-wrap .img-caption {
            background: rgba(0, 0, 0, 0.6);
            color: #fff;
            padding: 10px 18px;
            font-size: 0.9rem;
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            backdrop-filter: blur(4px);
        }
        .inset-links {
            background: #f0f5ff;
            border-left: 4px solid var(--c-accent);
            padding: 14px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        .inset-links a {
            font-weight: 500;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fafcff;
            border-radius: var(--radius);
            overflow: hidden;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--c-border);
        }
        th {
            background: var(--c-primary);
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f0f4ff;
        }
        ul,
        ol {
            padding-left: 24px;
            margin-bottom: 1.4rem;
        }
        li {
            margin-bottom: 0.5rem;
            font-size: 1.05rem;
        }
        blockquote {
            background: #f0f4fe;
            border-left: 6px solid var(--c-accent2);
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: #1a2a4a;
        }
        blockquote cite {
            display: block;
            margin-top: 10px;
            font-style: normal;
            font-weight: 600;
            color: var(--c-accent);
        }
        .interactive-modules {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 40px 0 20px;
        }
        .module-box {
            background: var(--c-surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 22px;
            border: 1px solid var(--c-border);
        }
        .module-box h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module-box h3 i {
            color: var(--c-accent);
        }
        .module-box form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 12px;
        }
        .module-box input,
        .module-box textarea,
        .module-box select {
            padding: 12px 16px;
            border: 2px solid var(--c-border);
            border-radius: 8px;
            font-size: 1rem;
            font-family: var(--font);
            background: #fafcff;
            transition: border var(--transition);
            width: 100%;
        }
        .module-box input:focus,
        .module-box textarea:focus,
        .module-box select:focus {
            outline: none;
            border-color: var(--c-accent);
            box-shadow: 0 0 0 4px rgba(255, 85, 0, 0.12);
        }
        .module-box textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn {
            background: var(--c-accent);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            justify-content: center;
        }
        .btn:hover {
            background: #cc4400;
            transform: scale(1.02);
        }
        .btn:active {
            transform: scale(0.97);
        }
        .btn-secondary {
            background: var(--c-primary);
        }
        .btn-secondary:hover {
            background: #0f0f3a;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 6px;
            justify-content: flex-end;
            font-size: 1.8rem;
            color: #ccc;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: var(--c-star);
        }
        .site-footer {
            background: var(--c-primary);
            color: #ccc;
            padding: 40px 0 30px;
            margin-top: 50px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        .footer-inner h4 {
            color: var(--c-accent2);
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #bbb;
            text-decoration: none;
        }
        .footer-inner a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
        }
        .footer-inner ul li {
            margin-bottom: 6px;
        }
        friend-link {
            display: block;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.95rem;
        }
        friend-link a {
            color: var(--c-accent2);
            margin-right: 16px;
            display: inline-block;
        }
        .copyright {
            text-align: center;
            margin-top: 30px;
            font-size: 0.85rem;
            color: #888;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
        }
        @media (max-width: 900px) {
            .interactive-modules {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--c-secondary);
                padding: 12px 16px;
                border-radius: var(--radius);
                margin-top: 8px;
                gap: 8px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 10px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                width: 100%;
            }
            .article-card {
                padding: 20px 16px;
            }
        }
        @media (max-width: 600px) {
            .footer-inner {
                grid-template-columns: 1fr;
            }
            .hero-img-wrap .img-caption {
                position: relative;
                background: var(--c-primary);
            }
            .my-logo {
                font-size: 1.4rem;
                padding: 2px 12px 2px 8px;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            .module-box {
                padding: 18px 14px;
            }
        }
        @media (min-width: 901px) {
            .nav-toggle {
                display: none !important;
            }
            .nav-menu {
                display: flex !important;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #eef2f7;
        }
        ::-webkit-scrollbar-thumb {
            background: #b0b8c8;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #8a94a8;
        }
        .mt-1 {
            margin-top: 16px;
        }
        .mb-1 {
            margin-bottom: 16px;
        }
        .text-center {
            text-align: center;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .highlight {
            background: #fff8e0;
            padding: 2px 8px;
            border-radius: 6px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: var(--c-accent2);
            color: var(--c-primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 20px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--c-accent);
            border-radius: 4px;
            margin: 12px 0 20px;
        }