*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background: #f4f7fc;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 1.05rem;
            padding: 0 16px;
            max-width: 1400px;
            margin: 0 auto;
        }
        a {
            color: #0d6efd;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #0a58ca;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.4rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: #0b1c2f;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
        }
        h2 {
            font-size: 1.9rem;
            border-bottom: 3px solid #ff6b6b;
            padding-bottom: 0.3rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.5rem;
            color: #2d4059;
        }
        h4 {
            font-size: 1.25rem;
            color: #3a4d6b;
        }
        hr {
            border: none;
            border-top: 2px dashed #ccc;
            margin: 2rem 0;
        }
        .wrapper {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
            padding: 24px 28px;
            margin: 20px 0 40px;
        }
        @media (min-width: 768px) {
            .wrapper {
                padding: 36px 48px;
            }
            body {
                padding: 0 24px;
            }
        }
        @media (min-width: 1200px) {
            .wrapper {
                padding: 48px 64px;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 12px;
            border-bottom: 2px solid #eef2f7;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #ff6b6b, #ee5a24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
            background: inherit;
            -webkit-background-clip: text;
            background-clip: text;
        }
        .my-logo a:hover {
            text-decoration: none;
            opacity: 0.85;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #555;
            color: #555;
            display: block;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .nav-list {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 18px;
            list-style: none;
            padding: 0;
            margin: 0;
            align-items: center;
        }
        .nav-list li a {
            font-weight: 600;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s;
            font-size: 0.98rem;
        }
        .nav-list li a:hover {
            border-bottom-color: #ff6b6b;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #1a1a2e;
            padding: 4px 8px;
        }
        @media (max-width: 780px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 12px;
                background: #f9fafc;
                padding: 12px 16px;
                border-radius: 16px;
                gap: 4px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                display: block;
                padding: 10px 0;
                border-bottom: 1px solid #e2e8f0;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 12px 0 4px;
            margin: 0;
            font-size: 0.9rem;
            color: #5a6a7a;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 10px;
            color: #aaa;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0d6efd;
        }
        .search-box {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 24px 0 16px;
            max-width: 620px;
        }
        .search-box input {
            flex: 1;
            min-width: 180px;
            padding: 14px 18px;
            border: 2px solid #dce3ed;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.25s;
            background: #f9fbfd;
        }
        .search-box input:focus {
            border-color: #ff6b6b;
        }
        .search-box button {
            background: #ff6b6b;
            color: #fff;
            border: none;
            padding: 14px 28px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-box button:hover {
            background: #e55a4a;
            transform: scale(1.02);
        }
        .search-box button i {
            font-size: 1.1rem;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 14px;
            margin: 24px 0 20px;
        }
        .link-grid a {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #f5f7fa;
            padding: 14px 18px;
            border-radius: 16px;
            font-weight: 500;
            border: 1px solid #e8edf4;
            transition: all 0.2s;
        }
        .link-grid a:hover {
            background: #ff6b6b10;
            border-color: #ff6b6b;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 107, 107, 0.12);
        }
        .link-grid a i {
            color: #ff6b6b;
            font-size: 1.2rem;
            width: 24px;
            text-align: center;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
            margin: 32px 0 20px;
        }
        @media (min-width: 700px) {
            .feedback-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 20px;
            padding: 24px 26px;
            border: 1px solid #e9edf4;
        }
        .feedback-card h4 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card textarea,
        .feedback-card input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce3ed;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fff;
            transition: border-color 0.2s;
            margin-top: 6px;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus {
            border-color: #ff6b6b;
            outline: none;
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #2d4059;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            margin-top: 10px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .feedback-card .btn-submit:hover {
            background: #1b2a3f;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            cursor: pointer;
            margin: 6px 0 10px;
            color: #ccc;
            transition: color 0.15s;
        }
        .star-rating i {
            transition: color 0.15s, transform 0.1s;
        }
        .star-rating i.active,
        .star-rating i:hover,
        .star-rating i:hover~i {
            color: #f59e0b;
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .site-footer {
            margin-top: 40px;
            padding: 28px 0 20px;
            border-top: 2px solid #eef2f7;
            font-size: 0.95rem;
        }
        friend-link {
            display: block;
            background: #f5f7fa;
            padding: 18px 22px;
            border-radius: 18px;
            margin: 18px 0 16px;
            font-weight: 500;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 0;
        }
        .copyright {
            text-align: center;
            color: #5a6a7a;
            padding-top: 16px;
            font-size: 0.88rem;
            border-top: 1px solid #e2e8f0;
            margin-top: 12px;
        }
        .copyright strong {
            color: #1a1a2e;
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .wrapper {
                padding: 16px 14px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .search-box button {
                padding: 12px 18px;
                font-size: 0.9rem;
            }
            .link-grid {
                grid-template-columns: 1fr;
            }
        }
        .content-section {
            margin: 28px 0;
        }
        .content-section p:last-child {
            margin-bottom: 0;
        }
        .feature-image {
            margin: 28px 0 20px;
            border-radius: 16px;
            background: #eef2f7;
            overflow: hidden;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
        }
        .feature-image img {
            width: 100%;
            object-fit: cover;
            min-height: 200px;
            background: #d9e2ef;
        }
        .highlight-box {
            background: linear-gradient(145deg, #fef9f0, #fff5eb);
            border-left: 5px solid #ff6b6b;
            padding: 20px 24px;
            border-radius: 16px;
            margin: 24px 0;
        }
        .data-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px 24px;
            background: #f5f7fa;
            padding: 18px 22px;
            border-radius: 16px;
            margin: 16px 0 24px;
        }
        @media (max-width: 500px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
        }
        .data-grid dt {
            font-weight: 700;
            color: #2d4059;
        }
        .data-grid dd {
            margin-bottom: 4px;
        }
        .author-badge {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #f1f4fa;
            padding: 16px 22px;
            border-radius: 18px;
            margin: 28px 0 16px;
            flex-wrap: wrap;
        }
        .author-badge i {
            font-size: 2.4rem;
            color: #2d4059;
        }
        .author-badge div strong {
            display: block;
            font-size: 1.1rem;
        }