* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: #1e2a3a;
            background: #fafbfc;
            padding: 0 1rem;
        }
        a {
            color: #0a5c8a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #b8860b;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.8rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: #0b2a40;
        }
        h1 {
            font-size: 2.4rem;
            border-left: 6px solid #b8860b;
            padding-left: 1rem;
            margin-top: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #e0e7ef;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 500;
        }
        p {
            margin-bottom: 1.2rem;
        }
        strong {
            color: #0b2a40;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            padding: 1.5rem 2rem;
            border-radius: 20px;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.5rem;
            }
            .container {
                padding: 1rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.5rem 0;
            border-bottom: 1px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 700;
            background: linear-gradient(135deg, #0b2a40, #b8860b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: inline-block;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .logo-sub {
            font-size: 0.75rem;
            color: #5a6b7c;
            display: block;
            margin-top: -4px;
            letter-spacing: 1px;
            font-weight: 400;
            -webkit-text-fill-color: #5a6b7c;
        }
        .nav-toggle {
            display: none;
            font-size: 1.7rem;
            background: none;
            border: none;
            color: #0b2a40;
            cursor: pointer;
            padding: 0.4rem 0.8rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #eef2f6;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 1.2rem;
            align-items: center;
        }
        .main-nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            color: #1e2a3a;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            border-bottom-color: #b8860b;
            color: #0b2a40;
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.5rem 0;
                gap: 0.6rem 0;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.5rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                font-size: 1rem;
                padding: 0.4rem 0;
                width: 100%;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.6rem;
            font-size: 0.85rem;
            padding: 0.8rem 0 0.2rem 0;
            color: #5a6b7c;
        }
        .breadcrumb a {
            color: #0a5c8a;
        }
        .breadcrumb span {
            color: #8a9aa8;
        }
        .search-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin: 1.8rem 0 2rem 0;
            background: #f1f5f9;
            padding: 1rem 1.4rem;
            border-radius: 60px;
            align-items: center;
            justify-content: space-between;
        }
        .search-wrap label {
            font-weight: 600;
            font-size: 0.95rem;
            color: #0b2a40;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-wrap input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1.2rem;
            border: 1px solid #ccd7e4;
            border-radius: 40px;
            font-size: 0.95rem;
            outline: none;
            background: #fff;
            transition: box-shadow 0.2s;
        }
        .search-wrap input[type="text"]:focus {
            box-shadow: 0 0 0 3px rgba(11, 42, 64, 0.1);
            border-color: #0a5c8a;
        }
        .search-wrap button {
            background: #0b2a40;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-wrap button:hover {
            background: #b8860b;
            transform: scale(1.02);
        }
        @media (max-width: 600px) {
            .search-wrap {
                border-radius: 20px;
                padding: 0.8rem 1rem;
                flex-direction: column;
                align-items: stretch;
            }
            .search-wrap button {
                justify-content: center;
            }
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        .content-main {
            min-width: 0;
        }
        .content-sidebar {
            position: sticky;
            top: 2rem;
            align-self: start;
        }
        @media (max-width: 992px) {
            .content-area {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                position: static;
                order: 2;
            }
        }
        .side-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.4rem 1.6rem;
            margin-bottom: 1.8rem;
            border: 1px solid #e8edf4;
        }
        .side-card h4 {
            margin-top: 0;
            font-size: 1.1rem;
            color: #0b2a40;
            border-bottom: 2px solid #dce3ec;
            padding-bottom: 0.5rem;
            margin-bottom: 0.8rem;
        }
        .side-card ul {
            list-style: none;
            padding-left: 0;
        }
        .side-card li {
            padding: 0.4rem 0;
            border-bottom: 1px dashed #e2e8f0;
        }
        .side-card li:last-child {
            border-bottom: none;
        }
        .side-card a {
            font-weight: 500;
        }
        .feature-img {
            margin: 2rem 0 1.5rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }
        .feature-img figcaption {
            background: #f1f5f9;
            padding: 0.7rem 1.2rem;
            font-size: 0.85rem;
            color: #3a4b5e;
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
            border-radius: 12px;
            border: 1px solid #e2e8f0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th {
            background: #0b2a40;
            color: #fff;
            padding: 0.7rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid #e8edf4;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f4f8fc;
        }
        .feedback-section {
            background: #f8fafc;
            border-radius: 20px;
            padding: 2rem;
            margin: 2.5rem 0 1.5rem 0;
            border: 1px solid #e2e8f0;
        }
        .feedback-section h3 {
            margin-top: 0;
        }
        .feedback-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .feedback-grid>div {
            flex: 1 1 240px;
            min-width: 0;
        }
        .feedback-grid label {
            font-weight: 600;
            display: block;
            margin-bottom: 0.3rem;
        }
        .feedback-grid input,
        .feedback-grid textarea,
        .feedback-grid select {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 1px solid #ccd7e4;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #fff;
            outline: none;
            transition: box-shadow 0.2s;
        }
        .feedback-grid input:focus,
        .feedback-grid textarea:focus,
        .feedback-grid select:focus {
            box-shadow: 0 0 0 3px rgba(11, 42, 64, 0.08);
            border-color: #0a5c8a;
        }
        .feedback-grid textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-grid button {
            background: #0b2a40;
            color: #fff;
            border: none;
            padding: 0.7rem 2.2rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            margin-top: 0.6rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-grid button:hover {
            background: #b8860b;
            transform: scale(1.02);
        }
        .score-group {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .score-group select {
            width: auto;
            min-width: 80px;
        }
        .site-footer {
            margin-top: 3rem;
            padding: 2rem 0 1rem 0;
            border-top: 2px solid #e2e8f0;
        }
        .site-footer .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-between;
        }
        .site-footer .footer-col {
            flex: 1 1 200px;
        }
        .site-footer h5 {
            font-size: 1rem;
            color: #0b2a40;
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: block;
            padding: 0.5rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 1rem 0.2rem 0;
            font-size: 0.9rem;
        }
        .copyright {
            text-align: center;
            padding: 1.5rem 0 0.5rem 0;
            font-size: 0.85rem;
            color: #5a6b7c;
            border-top: 1px solid #e2e8f0;
            margin-top: 1.5rem;
        }
        .copyright strong {
            color: #0b2a40;
        }
        .badge {
            display: inline-block;
            background: #b8860b;
            color: #fff;
            font-size: 0.7rem;
            padding: 0.15rem 0.7rem;
            border-radius: 40px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .last-updated {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: #5a6b7c;
            background: #f1f5f9;
            padding: 0.4rem 1.2rem;
            border-radius: 40px;
            width: fit-content;
            margin: 0.5rem 0 1rem 0;
        }
        .divider {
            height: 2px;
            background: linear-gradient(90deg, #b8860b, transparent);
            margin: 2.2rem 0;
            border: none;
        }
        .emoji-big {
            font-size: 1.3rem;
        }
        .tip-box {
            background: #f0f7fe;
            border-left: 4px solid #0a5c8a;
            padding: 1rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.2rem 0;
        }
        .tip-box strong {
            color: #0a5c8a;
        }
        @media (max-width: 480px) {
            .feedback-grid {
                flex-direction: column;
                gap: 1.2rem;
            }
            .site-footer .footer-grid {
                flex-direction: column;
                gap: 1.2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }