*,
        *::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, sans-serif;
            background: #f4f7fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #1a6bb0;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #c0392b;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0b1a2b;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.6rem;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 5px solid #e67e22;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c3e50;
        }
        p {
            margin-bottom: 1.1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1a2b 0%, #1a3a5c 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f7dc6f, #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: inline-block;
            padding: 0.2rem 0;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none !important;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f7dc6f;
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #f7dc6f;
            color: #f7dc6f;
        }
        .main-nav {
            display: flex;
            gap: 1.2rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e8edf5;
            font-weight: 500;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
            font-size: 0.95rem;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f7dc6f;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 5px;
        }
        .breadcrumb-wrap {
            background: #e9edf2;
            padding: 0.6rem 0;
            border-bottom: 1px solid #d0d8e0;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.88rem;
            color: #4a5a6a;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 10px;
            color: #8899aa;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #1a6bb0;
        }
        .breadcrumb .active {
            color: #2c3e50;
            font-weight: 600;
        }
        .content-wrapper {
            background: #fff;
            border-radius: 24px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.04);
            padding: 2.2rem 2.5rem;
            margin: 2rem 0 2.5rem;
        }
        .hero-img-wrap {
            border-radius: 20px;
            overflow: hidden;
            margin: 1.8rem 0 2.2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .hero-img-wrap img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .last-updated {
            display: inline-block;
            background: #eaf2f9;
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2c5f7a;
            margin-bottom: 1.2rem;
            font-weight: 500;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .highlight-box {
            background: #fdf8f0;
            border-left: 6px solid #e67e22;
            padding: 1.2rem 1.8rem;
            border-radius: 12px;
            margin: 1.8rem 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.2rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: #f0f5fe;
            border-radius: 16px;
            padding: 1.2rem 1rem;
            text-align: center;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #1a3a5c;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: #4a6a8a;
            font-weight: 500;
        }
        .tip-list {
            background: #f5f9ff;
            border-radius: 16px;
            padding: 1.2rem 1.8rem;
            margin: 1.6rem 0;
        }
        .tip-list li {
            margin-bottom: 0.6rem;
        }
        .inline-link-list {
            background: #f8fafc;
            border-radius: 14px;
            padding: 1rem 1.6rem;
            margin: 1.6rem 0;
            border: 1px solid #e2e8f0;
        }
        .inline-link-list a {
            display: inline-block;
            margin: 0.3rem 0.6rem 0.3rem 0;
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.8rem 0 1.8rem;
        }
        .interact-card {
            background: #f8faff;
            border-radius: 20px;
            padding: 1.6rem 1.8rem;
            border: 1px solid #e6edf6;
            transition: box-shadow 0.2s;
        }
        .interact-card:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
        }
        .interact-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .interact-card input,
        .interact-card textarea,
        .interact-card select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #d0dae8;
            border-radius: 10px;
            font-size: 0.95rem;
            margin-bottom: 0.8rem;
            font-family: inherit;
            transition: border 0.2s;
        }
        .interact-card input:focus,
        .interact-card textarea:focus {
            border-color: #1a6bb0;
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 107, 176, 0.12);
        }
        .interact-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn {
            background: #1a3a5c;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background: #e67e22;
            transform: scale(1.02);
        }
        .btn i {
            font-size: 0.9rem;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #d0d8e0;
            cursor: pointer;
            margin: 0.4rem 0 0.8rem;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.2s;
            color: #d0d8e0;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f39c12;
        }
        friend-link {
            display: block;
            padding: 1.4rem 0 0.6rem;
            border-top: 2px solid #e2e8f0;
            margin-top: 2rem;
        }
        friend-link .fl-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: #0b1a2b;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 1rem 0.2rem 0;
            padding: 0.2rem 0.4rem;
        }
        .site-footer {
            background: #0b1a2b;
            color: #b0c4d9;
            padding: 1.8rem 0;
            text-align: center;
            font-size: 0.9rem;
            margin-top: 2rem;
        }
        .site-footer a {
            color: #f0c27a;
        }
        .site-footer .copyright {
            margin-top: 0.6rem;
            border-top: 1px solid #1e3a5f;
            padding-top: 1rem;
            font-size: 0.82rem;
        }
        @media (max-width: 860px) {
            .content-wrapper {
                padding: 1.4rem 1.2rem;
                border-radius: 16px;
                margin: 1rem 0 1.8rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            .interact-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .nav-toggle {
                display: inline-block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.5rem;
                padding: 1rem 0 0.4rem;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                margin-top: 0.6rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.5rem 0.8rem;
                font-size: 1rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-img-wrap img {
                max-height: 240px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .content-wrapper {
                padding: 1rem 0.9rem;
            }
            h1 {
                font-size: 1.4rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-card .num {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
        }
        .schema-hidden {
            display: none;
        }
        .emoji-big {
            font-size: 1.3em;
        }
        .flex-badge {
            display: inline-block;
            background: #1a6bb0;
            color: #fff;
            padding: 0.1rem 1rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        hr {
            border: none;
            border-top: 2px dashed #dce3ec;
            margin: 2rem 0;
        }
        .section-icon {
            margin-right: 8px;
            color: #e67e22;
        }