*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #0b0e1a;
            color: #e4e8f0;
            line-height: 1.8;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #7ec8ff;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus-visible {
            color: #b3e0ff;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: #f0f4ff;
            line-height: 1.3;
            margin-top: 0;
        }
        h1 {
            font-size: 2.6rem;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-bottom: 2px solid #2a3050;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: #d4e2ff;
        }
        h4 {
            font-size: 1.2rem;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
            color: #b8ceff;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            color: #d6def0;
        }
        ul,
        ol {
            margin-bottom: 1.5rem;
            padding-left: 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
            font-size: 1.02rem;
        }
        strong {
            color: #ffd966;
            font-weight: 700;
        }
        em {
            color: #b0c8ff;
            font-style: italic;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }
        .site-header {
            background: linear-gradient(135deg, #0f1326 0%, #1a2040 100%);
            padding: 14px 0;
            border-bottom: 1px solid #2a3255;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            display: flex;
            flex-direction: column;
            font-size: 1.6rem;
            font-weight: 800;
            color: #f0f4ff;
            line-height: 1.2;
            letter-spacing: -0.02em;
            text-decoration: none;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #ffd966;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: #8a9bc0;
            letter-spacing: 0.3px;
        }
        .my-logo .logo-sub {
            font-size: 0.85rem;
            font-weight: 400;
            color: #9aafd4;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            color: #c8d6f0;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            background: #28305a;
            color: #fff;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #e4e8f0;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #1e254a;
        }
        .breadcrumb {
            padding: 14px 0 6px 0;
            font-size: 0.88rem;
            color: #7a8bb0;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
        }
        .breadcrumb li {
            display: inline;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 8px;
            color: #4a5a7a;
        }
        .breadcrumb a {
            color: #7ec8ff;
        }
        .breadcrumb .current {
            color: #c8d6f0;
        }
        .hero-section {
            padding: 32px 0 20px 0;
            text-align: center;
        }
        .hero-section h1 {
            font-size: 2.8rem;
            background: linear-gradient(135deg, #ffd966, #ffb347);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-section .subhead {
            font-size: 1.2rem;
            color: #a8bbdd;
            max-width: 700px;
            margin: 10px auto 0;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0 40px;
        }
        .feature-card {
            background: #151e3a;
            padding: 24px 18px;
            border-radius: 16px;
            text-align: center;
            border: 1px solid #26305a;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
        }
        .feature-card i {
            font-size: 2.4rem;
            color: #ffd966;
            margin-bottom: 12px;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin: 0 0 6px 0;
            border: none;
            color: #f0f4ff;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: #b0c4e8;
            margin: 0;
        }
        .content-section {
            padding: 10px 0 30px 0;
        }
        .content-section .container {
            max-width: 860px;
        }
        .img-wrapper {
            margin: 30px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            background: #111a30;
            border: 1px solid #28325a;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }
        .img-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
        }
        .img-caption {
            padding: 12px 18px;
            font-size: 0.9rem;
            color: #8a9fc8;
            background: #0e1428;
            border-top: 1px solid #1e2848;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0 30px;
            background: #111a30;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid #25305a;
        }
        .data-table th,
        .data-table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #1e2848;
        }
        .data-table th {
            background: #1a2348;
            color: #ffd966;
            font-weight: 600;
            font-size: 0.95rem;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #182040;
        }
        blockquote {
            border-left: 4px solid #ffd966;
            padding: 14px 22px;
            margin: 24px 0;
            background: #111a30;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #c8d6f0;
        }
        blockquote strong {
            color: #ffd966;
        }
        .interactive-module {
            background: #10162e;
            border: 1px solid #26305a;
            border-radius: 20px;
            padding: 30px 28px;
            margin: 32px 0;
        }
        .interactive-module h3 {
            margin-top: 0;
            border: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 500;
            margin-bottom: 6px;
            font-size: 0.95rem;
            color: #b8cef0;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            background: #0b0f22;
            border: 1px solid #2a3460;
            color: #e4e8f0;
            font-size: 1rem;
            transition: border 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #ffd966;
            box-shadow: 0 0 0 3px rgba(255, 217, 102, 0.15);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, #ffd966, #f0b840);
            color: #0b0e1a;
            font-weight: 700;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .btn:hover {
            transform: scale(1.02);
            box-shadow: 0 8px 24px rgba(255, 217, 102, 0.25);
        }
        .btn:active {
            transform: scale(0.97);
        }
        .star-rating {
            display: flex;
            gap: 8px;
            font-size: 2rem;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #3a456a;
            transition: color 0.2s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ffd966;
        }
        friend-link {
            display: block;
            padding: 24px 0 10px 0;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 12px;
            background: #1a2248;
            border-radius: 20px;
            font-size: 0.92rem;
            color: #b0c8f0;
            transition: background 0.2s, color 0.2s;
        }
        friend-link a:hover {
            background: #2a3870;
            color: #ffd966;
            text-decoration: none;
        }
        friend-link .fl-title {
            font-weight: 600;
            color: #8a9fc8;
            margin-bottom: 8px;
            display: block;
            font-size: 0.95rem;
        }
        .site-footer {
            background: #0a0e1e;
            border-top: 1px solid #1e2848;
            padding: 30px 0 20px;
            margin-top: auto;
            text-align: center;
            font-size: 0.9rem;
            color: #6a7a9a;
        }
        .site-footer .copyright {
            margin-top: 16px;
            font-size: 0.85rem;
            color: #4a5a7a;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 12px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 16px;
                border-radius: 10px;
            }
            .header-inner {
                align-items: center;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .interactive-module {
                padding: 20px 16px;
            }
            .data-table {
                font-size: 0.9rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 14px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #283060;
            color: #ffd966;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            font-size: 1.4rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
            transition: background 0.2s, transform 0.2s;
            z-index: 50;
        }
        .scroll-top:hover {
            background: #3a4a80;
            transform: translateY(-4px);
        }
        @media (max-width: 600px) {
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
        }
        .skip-link {
            position: absolute;
            top: -100px;
            left: 20px;
            background: #ffd966;
            color: #0b0e1a;
            padding: 12px 24px;
            border-radius: 0 0 12px 12px;
            font-weight: 700;
            z-index: 200;
            transition: top 0.3s;
        }
        .skip-link:focus {
            top: 0;
        }
        @media print {
            .site-header {
                position: static;
                backdrop-filter: none;
            }
            .scroll-top,
            .nav-toggle {
                display: none !important;
            }
            body {
                background: #fff;
                color: #111;
            }
            a {
                color: #0044cc;
            }
            .feature-card {
                border: 1px solid #ccc;
            }
            .interactive-module {
                border: 1px solid #aaa;
                background: #f5f5f5;
            }
            .data-table {
                border: 1px solid #aaa;
            }
            .data-table th {
                background: #ddd;
            }
        }