*,
        *::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: #f5f7fa;
            color: #1e2b3c;
            line-height: 1.7;
            padding: 0 1rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #1a6b8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus-visible {
            color: #0d3e52;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            margin-top: 1.8rem;
            margin-bottom: 0.75rem;
            color: #0f2a3b;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #e67e22;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #e67e22;
            padding-left: 0.9rem;
            margin-top: 2.2rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1d4a63;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c5f7a;
        }
        p {
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        strong {
            color: #0f2a3b;
        }
        .container {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            padding: 1.5rem 2rem 2rem;
            margin: 1.2rem 0 2rem;
        }
        .badge {
            display: inline-block;
            background: #e67e22;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .divider {
            border: 0;
            height: 2px;
            background: linear-gradient(90deg, #e67e22, #f1c40f, #e67e22);
            margin: 2rem 0;
        }
        .emoji-big {
            font-size: 1.6rem;
            vertical-align: middle;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0 0.6rem;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(145deg, #1a2a3a, #2c5f7a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #e67e22;
            font-size: 2.2rem;
        }
        .my-logo a {
            text-decoration: none;
            color: inherit;
            background: none;
            -webkit-text-fill-color: inherit;
        }
        .my-logo a:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #1e2b3c;
            border-radius: 8px;
            padding: 0.4rem 0.7rem;
            font-size: 1.4rem;
            cursor: pointer;
            color: #1e2b3c;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e2e8f0;
        }
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 1.2rem;
            list-style: none;
            padding: 0;
            margin: 0;
            align-items: center;
        }
        .nav-menu li a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            color: #1e2b3c;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s;
        }
        .nav-menu li a:hover {
            border-bottom-color: #e67e22;
            text-decoration: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.6rem 0;
            margin: 0.2rem 0 0.8rem;
            font-size: 0.85rem;
            color: #5a6c7e;
        }
        .breadcrumb li+li::before {
            content: "▸";
            padding: 0 0.5rem;
            color: #b0c4d0;
        }
        .breadcrumb a {
            color: #1a6b8a;
        }
        .breadcrumb .current {
            color: #0f2a3b;
            font-weight: 600;
        }
        .search-box {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            background: #f1f4f8;
            border-radius: 50px;
            padding: 0.3rem 0.3rem 0.3rem 1.2rem;
            align-items: center;
            max-width: 480px;
            margin: 1.2rem 0;
            border: 1px solid #dce3ec;
        }
        .search-box i {
            color: #7a8b9e;
            font-size: 1rem;
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.6rem 0;
            font-size: 0.95rem;
            outline: none;
            min-width: 120px;
        }
        .search-box button {
            background: #e67e22;
            border: none;
            border-radius: 50px;
            padding: 0.5rem 1.4rem;
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-box button:hover {
            background: #c96b1a;
        }
        .interact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2rem 0 1.5rem;
        }
        @media (max-width: 640px) {
            .interact-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .card-form {
            background: #f9fbfd;
            border-radius: 18px;
            padding: 1.4rem 1.6rem 1.8rem;
            border: 1px solid #e5ecf3;
        }
        .card-form h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.2rem;
        }
        .card-form label {
            font-weight: 600;
            font-size: 0.9rem;
            display: block;
            margin: 0.8rem 0 0.25rem;
        }
        .card-form input,
        .card-form textarea,
        .card-form select {
            width: 100%;
            padding: 0.6rem 0.8rem;
            border: 1px solid #d0dbe8;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s;
        }
        .card-form input:focus,
        .card-form textarea:focus,
        .card-form select:focus {
            border-color: #e67e22;
            outline: none;
            box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.15);
        }
        .card-form textarea {
            min-height: 80px;
            resize: vertical;
        }
        .card-form .btn-submit {
            background: #1e2b3c;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.6rem 1.6rem;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            margin-top: 0.8rem;
            transition: background 0.2s;
            width: auto;
        }
        .card-form .btn-submit:hover {
            background: #0f2a3b;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 0.2rem;
            justify-content: flex-end;
            font-size: 1.5rem;
            margin: 0.4rem 0 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d0dbe8;
            cursor: pointer;
            transition: color 0.15s;
            font-size: 1.6rem;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
        }
        .site-footer {
            margin: 3rem 0 1.5rem;
            padding-top: 1.8rem;
            border-top: 2px solid #e2e8f0;
            text-align: center;
            font-size: 0.9rem;
        }
        friend-link {
            display: block;
            margin: 1.2rem 0;
            padding: 1rem 1.2rem;
            background: #f1f4f8;
            border-radius: 16px;
            font-size: 0.9rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.8rem;
            padding: 0.2rem 0;
        }
        .copyright {
            color: #5a6c7e;
            font-size: 0.82rem;
            margin-top: 0.8rem;
            letter-spacing: 0.2px;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            .container {
                padding: 1rem 1rem 1.5rem;
                border-radius: 18px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .nav-toggle {
                display: inline-block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 0.8rem 0 0.4rem;
                gap: 0.2rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                display: block;
                padding: 0.4rem 0;
                font-size: 1rem;
            }
            .search-box {
                max-width: 100%;
            }
            .interact-grid {
                grid-template-columns: 1fr;
            }
            .star-rating label {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0.8rem 0.8rem 1.2rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.5rem;
            }
            .card-form {
                padding: 1rem;
            }
        }
        .highlight-box {
            background: #fef9ef;
            border-left: 5px solid #e67e22;
            padding: 1rem 1.4rem;
            border-radius: 0 16px 16px 0;
            margin: 1.5rem 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 1rem;
            margin: 1.2rem 0;
        }
        .stat-card {
            background: #f1f6fb;
            border-radius: 16px;
            padding: 1rem;
            text-align: center;
            font-weight: 600;
        }
        .stat-card .num {
            font-size: 2rem;
            color: #e67e22;
            display: block;
        }
        .stat-card .label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #4b6b81;
        }
        .interview-block {
            background: #f4f8fe;
            border-radius: 18px;
            padding: 1.2rem 1.6rem;
            margin: 1.5rem 0;
            border: 1px solid #dce6f0;
        }
        .interview-block .speaker {
            font-weight: 700;
            color: #0f2a3b;
        }
        .interview-block .quote {
            font-style: italic;
            margin: 0.3rem 0 0.6rem 1rem;
            border-left: 3px solid #e67e22;
            padding-left: 1rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            background: #fafcfe;
            border-radius: 12px;
            overflow: hidden;
        }
        .table-wrap th,
        .table-wrap td {
            padding: 0.6rem 0.9rem;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        .table-wrap th {
            background: #1e2b3c;
            color: #fff;
            font-weight: 600;
        }
        .table-wrap tr:last-child td {
            border-bottom: none;
        }
        .table-wrap tr:hover td {
            background: #f1f6fb;
        }
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 1.2rem 0;
        }
        @media (max-width: 640px) {
            .two-col {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }
        .tag {
            display: inline-block;
            background: #e8edf3;
            border-radius: 30px;
            padding: 0.1rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: #1e2b3c;
            margin-right: 0.3rem;
        }
        .updated {
            font-size: 0.85rem;
            color: #5a6c7e;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin-bottom: 0.6rem;
        }
        .pro-tip {
            background: #eaf7e7;
            border-radius: 14px;
            padding: 0.8rem 1.2rem;
            margin: 1rem 0;
            border-left: 4px solid #27ae60;
        }
        .pro-tip i {
            color: #27ae60;
            margin-right: 0.4rem;
        }