*,
        *::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: #f5f7fa;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0f3b5e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #d97706;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            color: #0b1e2e;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #d97706;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c4a6e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .badge {
            display: inline-block;
            background: #d97706;
            color: #fff;
            font-size: 0.75rem;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            letter-spacing: 0.5px;
            font-weight: 600;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1e2e 0%, #132f44 100%);
            color: #fff;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: 2px;
            background: linear-gradient(135deg, #fbbf24, #d97706);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 12px rgba(251, 191, 36, 0.25);
            display: flex;
            align-items: center;
            gap: 0.3rem;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #d97706;
            font-size: 1.7rem;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #fbbf24;
            color: #fbbf24;
            font-size: 1.5rem;
            padding: 0.3rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #fbbf24;
            color: #0b1e2e;
        }
        .navbar {
            display: flex;
            gap: 1.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .navbar a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: 0.2s;
            font-size: 0.95rem;
            position: relative;
        }
        .navbar a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: #fbbf24;
            transition: 0.3s;
        }
        .navbar a:hover::after {
            width: 100%;
        }
        .navbar a:hover {
            color: #fbbf24;
            background: rgba(251, 191, 36, 0.08);
        }
        .breadcrumb {
            background: #e9edf3;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d1d9e6;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            gap: 0.4rem;
        }
        .breadcrumb li+li::before {
            content: '›';
            margin-right: 0.5rem;
            color: #7f8c9b;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0f3b5e;
        }
        .breadcrumb .current {
            color: #6b7a8a;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
            color: #fff;
            padding: 2.5rem 1rem;
            border-radius: 0 0 40px 40px;
            margin-bottom: 2rem;
            text-align: center;
        }
        .hero h1 {
            color: #fbbf24;
            font-size: 2.6rem;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 800px;
            margin: 1rem auto 0;
            opacity: 0.92;
        }
        .hero .meta-info {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-top: 1.5rem;
            font-size: 0.95rem;
        }
        .hero .meta-info span {
            background: rgba(255, 255, 255, 0.12);
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
            backdrop-filter: blur(4px);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 2rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            background: #ffffff;
            border-radius: 20px;
            padding: 1.5rem 1.2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            border: 1px solid #e9edf3;
            height: fit-content;
            position: sticky;
            top: 80px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #d97706;
            padding-bottom: 0.5rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 0.6rem;
        }
        .sidebar a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.4rem 0.6rem;
            border-radius: 8px;
            transition: 0.2s;
            font-weight: 500;
        }
        .sidebar a:hover {
            background: #f1f5f9;
            color: #d97706;
        }
        .sidebar a i {
            width: 1.2rem;
            color: #d97706;
        }
        .section-card {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 1.8rem 2.2rem;
            margin-bottom: 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef2f6;
            transition: box-shadow 0.3s;
        }
        .section-card:hover {
            box-shadow: 0 8px 35px rgba(0, 0, 0, 0.07);
        }
        .feature-img {
            border-radius: 16px;
            margin: 1.2rem 0 1.8rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .data-card {
            background: #f1f5f9;
            border-radius: 14px;
            padding: 1rem 1.2rem;
            text-align: center;
            border-left: 4px solid #d97706;
        }
        .data-card .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0b1e2e;
        }
        .data-card .label {
            font-size: 0.85rem;
            color: #4a5b6e;
            font-weight: 500;
        }
        .interview-block {
            background: #f8f4ed;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.5rem 0;
            border-left: 5px solid #d97706;
            font-style: italic;
        }
        .interview-block strong {
            font-style: normal;
            color: #0b1e2e;
        }
        .interview-block .source {
            margin-top: 0.8rem;
            font-style: normal;
            font-weight: 600;
            color: #6b4c1a;
        }
        .interactive-area {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .interactive-card {
            background: #fff;
            border-radius: 18px;
            padding: 1.5rem 1.8rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e9edf3;
        }
        .interactive-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .interactive-card input,
        .interactive-card textarea,
        .interactive-card select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dde3ec;
            border-radius: 10px;
            font-size: 1rem;
            transition: 0.2s;
            font-family: inherit;
            background: #fafcff;
        }
        .interactive-card input:focus,
        .interactive-card textarea:focus,
        .interactive-card select:focus {
            border-color: #d97706;
            outline: none;
            box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
        }
        .interactive-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn {
            background: #0b1e2e;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #d97706;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(217, 119, 6, 0.25);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #0b1e2e;
            color: #0b1e2e;
        }
        .btn-outline:hover {
            background: #0b1e2e;
            color: #fff;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d1d5db;
            cursor: pointer;
            transition: 0.2s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f59e0b;
        }
        .star-rating i {
            transition: 0.15s;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        friend-link {
            display: block;
            background: #f1f5f9;
            border-radius: 18px;
            padding: 1.8rem 2rem;
            margin: 2.5rem 0 1.5rem;
            border: 1px solid #dde3ec;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        friend-link .link-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
            margin-top: 1rem;
        }
        friend-link a {
            font-weight: 500;
            padding: 0.2rem 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        friend-link a:hover {
            border-bottom-color: #d97706;
            color: #d97706;
        }
        .site-footer {
            background: #0b1e2e;
            color: #cbd5e1;
            padding: 2rem 0 1.5rem;
            margin-top: 3rem;
            border-radius: 30px 30px 0 0;
        }
        .site-footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .site-footer a {
            color: #fbbf24;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer .copyright {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .interactive-area {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 700px) {
            .nav-toggle {
                display: block;
            }
            .navbar {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #132f44;
                padding: 1rem 0.8rem;
                border-radius: 12px;
                margin-top: 0.5rem;
                gap: 0.4rem;
            }
            .navbar.open {
                display: flex;
            }
            .header-inner {
                align-items: center;
            }
            .hero {
                padding: 1.8rem 1rem;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .section-card {
                padding: 1.2rem 1rem;
            }
            .interview-block {
                padding: 1rem 1.2rem;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
            .hero .meta-info {
                flex-direction: column;
                gap: 0.6rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .interactive-card {
                padding: 1rem;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .highlight {
            background: #fef3c7;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-muted {
            color: #5e6f82;
        }
        .tag {
            display: inline-block;
            background: #dbeafe;
            color: #1e3a5f;
            padding: 0.15rem 0.8rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }