*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #0b0d1a;
            color: #e4e8f0;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: #f5c842;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #ffde7a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 16px;
        }
        ul,
        ol {
            padding-left: 1.6rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #ffffff;
            margin-top: 0;
        }
        h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
            margin-top: 3.2rem;
            border-bottom: 3px solid #f5c842;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        h3 {
            font-size: clamp(1.2rem, 2.8vw, 1.8rem);
            margin-top: 2.4rem;
            color: #f5c842;
        }
        h4 {
            font-size: clamp(1rem, 2vw, 1.3rem);
            margin-top: 1.6rem;
            color: #b0c4ff;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f1228 0%, #1a1f3a 100%);
            border-bottom: 2px solid #2a2f5a;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem 1.2rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f5c842, #ff8a5c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f5c842;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #f5c842;
            color: #f5c842;
            font-size: 1.8rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #f5c84222;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.8rem;
            align-items: center;
        }
        .main-nav a {
            color: #c8cee8;
            font-weight: 500;
            padding: 0.3rem 0.7rem;
            border-radius: 6px;
            font-size: 0.95rem;
            transition: 0.2s;
        }
        .main-nav a:hover {
            color: #f5c842;
            background: #ffffff0a;
            text-decoration: none;
        }
        .main-nav a.active {
            color: #f5c842;
            background: #f5c8421a;
        }
        .breadcrumb {
            padding: 0.8rem 0 0.2rem;
            font-size: 0.9rem;
            color: #8890b0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb a {
            color: #8890b0;
        }
        .breadcrumb a:hover {
            color: #f5c842;
        }
        .breadcrumb span {
            color: #f5c842;
        }
        .hero-section {
            padding: 3rem 0 2rem;
            text-align: center;
            background: radial-gradient(ellipse at 50% 0%, #1a1f4a 0%, #0b0d1a 70%);
        }
        .hero-section h1 {
            margin-bottom: 0.8rem;
        }
        .hero-section .subtitle {
            font-size: 1.2rem;
            color: #b0c4ff;
            max-width: 780px;
            margin: 0 auto 1.2rem;
        }
        .hero-section .meta-info {
            font-size: 0.95rem;
            color: #7880a0;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
        }
        .hero-section .meta-info i {
            margin-right: 0.4rem;
            color: #f5c842;
        }
        .last-updated {
            background: #1a1f3a;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            display: inline-block;
            font-size: 0.85rem;
            border: 1px solid #2a2f5a;
        }
        .content-area {
            padding: 2rem 0 4rem;
        }
        .content-card {
            background: #11142e;
            border-radius: 24px;
            padding: 2rem 2.4rem;
            margin-bottom: 2.4rem;
            border: 1px solid #2a2f5a;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            transition: border-color 0.3s;
        }
        .content-card:hover {
            border-color: #3a3f6a;
        }
        @media (max-width: 600px) {
            .content-card {
                padding: 1.2rem 1rem;
            }
        }
        .featured-image-wrap {
            margin: 1.8rem 0 2.2rem;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            background: #0b0d1a;
        }
        .featured-image-wrap img {
            width: 100%;
            object-fit: cover;
            max-height: 520px;
        }
        .image-caption {
            font-size: 0.85rem;
            color: #7880a0;
            text-align: center;
            padding: 0.6rem 0 0.2rem;
            font-style: italic;
        }
        .interactive-modules {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.6rem;
            margin: 2.4rem 0;
        }
        @media (max-width: 700px) {
            .interactive-modules {
                grid-template-columns: 1fr;
            }
        }
        .module-box {
            background: #0f1228;
            border: 1px solid #2a2f5a;
            border-radius: 18px;
            padding: 1.6rem 1.8rem;
        }
        .module-box h4 {
            margin-top: 0;
            margin-bottom: 1rem;
            color: #f5c842;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .module-box form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .module-box input,
        .module-box textarea,
        .module-box select {
            background: #1a1f3a;
            border: 1px solid #2a2f5a;
            border-radius: 10px;
            padding: 0.7rem 1rem;
            color: #e4e8f0;
            font-size: 0.95rem;
            transition: border 0.2s;
            width: 100%;
            font-family: inherit;
        }
        .module-box input:focus,
        .module-box textarea:focus,
        .module-box select:focus {
            outline: none;
            border-color: #f5c842;
        }
        .module-box textarea {
            min-height: 80px;
            resize: vertical;
        }
        .module-box button {
            background: #f5c842;
            color: #0b0d1a;
            font-weight: 700;
            border: none;
            border-radius: 30px;
            padding: 0.7rem 1.6rem;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            align-self: flex-start;
        }
        .module-box button:hover {
            background: #ffde7a;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px #f5c84233;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #3a3f5a;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5c842;
        }
        friend-link {
            display: block;
            padding: 1.2rem 0 0.4rem;
            border-top: 1px solid #2a2f5a;
            margin-top: 2rem;
        }
        friend-link .friend-title {
            font-weight: 600;
            color: #8890b0;
            font-size: 0.9rem;
            margin-bottom: 0.6rem;
        }
        friend-link a {
            color: #b0c4ff;
            margin-right: 1.4rem;
            font-size: 0.95rem;
        }
        friend-link a:hover {
            color: #f5c842;
        }
        .site-footer {
            background: #0a0c1a;
            border-top: 2px solid #1a1f3a;
            padding: 2.4rem 0 1.8rem;
            text-align: center;
            color: #7880a0;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            margin-top: 0.8rem;
            letter-spacing: 0.02em;
        }
        .site-footer a {
            color: #b0c4ff;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #11142e;
                padding: 1rem 0.8rem;
                border-radius: 16px;
                border: 1px solid #2a2f5a;
                margin-top: 0.4rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 0.8rem;
                border-bottom: 1px solid #1a1f3a;
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .hero-section {
                padding: 2rem 0 1.2rem;
            }
            .content-card {
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .header-inner {
                gap: 0.4rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .module-box {
                padding: 1.2rem;
            }
        }
        .highlight {
            background: linear-gradient(120deg, #f5c84222, #f5c84211);
            padding: 0 0.3rem;
            border-radius: 4px;
        }
        .badge {
            display: inline-block;
            background: #f5c842;
            color: #0b0d1a;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            letter-spacing: 0.03em;
        }
        .emoji-lg {
            font-size: 1.4em;
            line-height: 1;
        }
        .key-point {
            border-left: 4px solid #f5c842;
            padding-left: 1.2rem;
            margin: 1.2rem 0;
            background: #0f1228;
            border-radius: 0 12px 12px 0;
            padding: 0.8rem 1.2rem;
        }
        .key-point strong {
            color: #f5c842;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #0f1228;
            border-radius: 12px;
            overflow: hidden;
        }
        th,
        td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #1a1f3a;
        }
        th {
            background: #1a1f3a;
            color: #f5c842;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        :target {
            scroll-margin-top: 100px;
        }
        .schema-hidden {
            display: none;
        }