*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f6f9fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0b3b5c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0d2b3e;
            margin-top: 1.6em;
            margin-bottom: 0.5em;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4em;
        }
        h2 {
            font-size: 1.9rem;
            border-left: 5px solid #2a9d8f;
            padding-left: 0.7rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 0.8rem 0 1.4rem 1.8rem;
        }
        li {
            margin-bottom: 0.3rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0.5rem;
        }
        .badge {
            background: #2a9d8f;
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        .highlight {
            background: #f0f7f4;
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.8rem;
            margin-right: 0.3rem;
        }
        hr {
            border: 0;
            height: 2px;
            background: linear-gradient(90deg, #2a9d8f, #e9c46a);
            margin: 2.5rem 0;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #5a6b7a;
            background: #eef3f7;
            padding: 0.4rem 1rem;
            border-radius: 30px;
            display: inline-block;
            margin-bottom: 1.5rem;
        }
        header {
            background: #ffffff;
            border-bottom: 2px solid #e2eaf1;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0.5rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #0d2b3e;
            letter-spacing: -0.5px;
        }
        .my-logo i {
            color: #2a9d8f;
            margin-right: 0.3rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #1e6f9f;
        }
        .my-logo span {
            font-weight: 300;
            color: #5a6b7a;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.2rem;
        }
        .nav-list li a {
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #1a2634;
            transition: background 0.2s, color 0.2s;
        }
        .nav-list li a:hover {
            background: #e9f0f5;
            color: #0d2b3e;
            text-decoration: none;
        }
        .nav-list li a i {
            margin-right: 0.3rem;
            color: #2a9d8f;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0d2b3e;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e9f0f5;
        }
        .nav-check {
            display: none;
        }
        .breadcrumb {
            background: #ffffff;
            padding: 0.7rem 0;
            border-bottom: 1px solid #e8edf2;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0.5rem;
        }
        .breadcrumb ol li {
            margin: 0 0.2rem;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin: 0 0.4rem;
            color: #8a9aa8;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb .current {
            color: #5a6b7a;
            font-weight: 600;
        }
        .hero-img {
            margin: 2rem 0 1.5rem;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        section {
            margin: 3rem 0;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.8rem;
            margin: 2rem 0;
        }
        .card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.6rem 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid #e8edf2;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
        }
        .card i {
            font-size: 2.2rem;
            color: #2a9d8f;
            margin-bottom: 0.6rem;
        }
        .card h3 {
            margin-top: 0.2rem;
            font-size: 1.3rem;
        }
        .card h4 {
            margin-top: 0;
            font-size: 1.1rem;
            font-weight: 600;
        }
        .search-box {
            background: #ffffff;
            border-radius: 60px;
            padding: 0.3rem 0.3rem 0.3rem 1.5rem;
            display: flex;
            border: 1px solid #d0dce8;
            max-width: 520px;
            margin: 1.8rem 0;
            transition: border 0.2s, box-shadow 0.2s;
        }
        .search-box:focus-within {
            border-color: #2a9d8f;
            box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.15);
        }
        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.7rem 0;
            font-size: 1rem;
            outline: none;
            color: #1a2634;
        }
        .search-box button {
            background: #2a9d8f;
            border: none;
            color: #fff;
            padding: 0.7rem 1.8rem;
            border-radius: 60px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 1rem;
        }
        .search-box button:hover {
            background: #1f7a6f;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2rem 0;
        }
        .feedback-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.8rem 1.6rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf2;
        }
        .feedback-card h3 {
            margin-top: 0;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 1px solid #d0dce8;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fafcfe;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #2a9d8f;
            outline: none;
            box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.1);
        }
        .feedback-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #1e6f9f;
            color: #fff;
            border: none;
            padding: 0.8rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 1rem;
        }
        .feedback-card .btn-submit:hover {
            background: #0d4b72;
        }
        .star-rating {
            display: flex;
            gap: 0.2rem;
            font-size: 1.8rem;
            color: #e0c56a;
            cursor: pointer;
        }
        .star-rating i {
            transition: color 0.15s, transform 0.15s;
        }
        .star-rating i:hover {
            color: #f4c542;
            transform: scale(1.1);
        }
        friend-link {
            display: block;
            background: #ffffff;
            border-radius: 16px;
            padding: 1.8rem 1.6rem;
            border: 1px solid #e8edf2;
            margin: 2rem 0 1rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.4rem;
            margin: 0.8rem 0 0;
            padding: 0;
        }
        friend-link ul li a {
            font-weight: 500;
            padding: 0.2rem 0;
        }
        friend-link ul li a i {
            margin-right: 0.3rem;
            color: #2a9d8f;
            font-size: 0.8rem;
        }
        footer {
            background: #0d2b3e;
            color: #dce5ed;
            padding: 2.5rem 0 1.5rem;
            border-radius: 24px 24px 0 0;
            margin-top: 3rem;
        }
        footer .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        footer a {
            color: #a8c9e0;
        }
        footer a:hover {
            color: #ffffff;
        }
        footer .copyright {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-top: 0.5rem;
            width: 100%;
            text-align: center;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-wrapper {
                order: 3;
                width: 100%;
                margin-top: 0.8rem;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
                display: none;
                background: #ffffff;
                border-radius: 16px;
                padding: 0.8rem 0;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
                border: 1px solid #e8edf2;
            }
            .nav-list li a {
                display: block;
                padding: 0.7rem 1.2rem;
                border-radius: 0;
            }
            .hamburger {
                display: block;
            }
            .nav-check:checked~.nav-wrapper .nav-list {
                display: flex;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .search-box {
                flex-wrap: wrap;
                border-radius: 20px;
                padding: 0.5rem;
            }
            .search-box input {
                width: 100%;
                padding: 0.5rem 0.8rem;
            }
            .search-box button {
                width: 100%;
                border-radius: 20px;
                margin-top: 0.3rem;
            }
            footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 0.6rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
            .card {
                padding: 1.2rem;
            }
        }
        .author-note {
            background: #eef7fa;
            border-left: 4px solid #2a9d8f;
            padding: 1rem 1.4rem;
            border-radius: 0 12px 12px 0;
            margin: 1.8rem 0;
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e8edf2;
        }
        th {
            background: #eef3f7;
            font-weight: 600;
            color: #0d2b3e;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .tip-box {
            background: #fffae6;
            border-radius: 12px;
            padding: 1.2rem 1.5rem;
            border: 1px solid #f0e4b8;
            margin: 1.4rem 0;
        }
        .tip-box i {
            color: #e9c46a;
            margin-right: 0.5rem;
        }
        .inline-link-icon {
            margin: 0 0.1rem;
        }