*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #f5f7fa;
            color: #1e2a3a;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            padding: 0 1rem;
        }
        a {
            color: #0b5e7e;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #ff7a2f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            color: #0a2a3a;
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: 2.4rem;
            margin: 1.2rem 0 0.8rem;
        }
        h2 {
            font-size: 1.9rem;
            margin: 2.4rem 0 1rem;
            border-bottom: 3px solid #ff7a2f;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.5rem;
            margin: 2rem 0 0.8rem;
            color: #0b5e7e;
        }
        h4 {
            font-size: 1.2rem;
            margin: 1.4rem 0 0.6rem;
            color: #2a4a5a;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        ul,
        ol {
            margin: 0.8rem 0 1.4rem 1.8rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        strong {
            color: #0a2a3a;
            font-weight: 700;
        }
        .container {
            max-width: 1100px;
            margin: 0 auto;
            background: #ffffff;
            padding: 1.8rem 2.2rem;
            border-radius: 24px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.8rem;
            border-bottom: 2px solid #e9edf2;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0b5e7e, #ff7a2f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            display: inline-block;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0b5e7e;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e9edf2;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 1.2rem;
            align-items: center;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: #e9edf2;
            color: #ff7a2f;
            text-decoration: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.8rem 0 0.2rem;
            margin: 0;
            font-size: 0.9rem;
            color: #5a6a7a;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.6rem;
            color: #b0bcc8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0b5e7e;
        }
        .breadcrumb a:hover {
            color: #ff7a2f;
        }
        .breadcrumb .current {
            color: #2a4a5a;
            font-weight: 600;
        }
        .hero-img {
            margin: 1.6rem 0 2rem;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
            background: #dce3ec;
        }
        .hero-img img {
            width: 100%;
            object-fit: cover;
            min-height: 200px;
            max-height: 460px;
        }
        .search-section {
            background: #f0f4f9;
            padding: 1.6rem 2rem;
            border-radius: 18px;
            margin: 2rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
        }
        .search-section label {
            font-weight: 700;
            font-size: 1.1rem;
            color: #0a2a3a;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-section form {
            display: flex;
            flex: 1 1 300px;
            gap: 0.6rem;
        }
        .search-section input[type="text"] {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #d0d8e0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-section input[type="text"]:focus {
            border-color: #ff7a2f;
        }
        .search-section button {
            background: #0b5e7e;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-section button:hover {
            background: #ff7a2f;
            transform: scale(1.02);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.4rem 0;
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            border: 1px solid #e2e8f0;
            transition: box-shadow 0.2s;
        }
        .feedback-card:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.3rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 2px solid #d0d8e0;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
            background: #fff;
        }
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #ff7a2f;
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #ff7a2f;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-card .btn-submit:hover {
            background: #0b5e7e;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #ffb422;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            transition: color 0.15s, transform 0.1s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #ff7a2f;
            transform: scale(1.1);
        }
        .link-panel {
            background: #f0f4f9;
            border-radius: 18px;
            padding: 1.6rem 2rem;
            margin: 2rem 0;
        }
        .link-panel h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .link-panel ul {
            columns: 2 240px;
            list-style: none;
            margin: 0.6rem 0 0;
            padding: 0;
        }
        .link-panel li {
            padding: 0.2rem 0;
            break-inside: avoid;
        }
        .link-panel a {
            font-weight: 500;
            display: inline-block;
            padding: 0.2rem 0;
        }
        .link-panel a::before {
            content: "▸ ";
            color: #ff7a2f;
            font-weight: 700;
        }
        .site-footer {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #e9edf2;
            font-size: 0.95rem;
            color: #4a5a6a;
        }
        .site-footer friend-link {
            display: block;
            background: #f0f4f9;
            border-radius: 16px;
            padding: 1.4rem 2rem;
            margin: 1.2rem 0;
            font-weight: 500;
        }
        .site-footer friend-link a {
            margin: 0 0.8rem 0 0.2rem;
            display: inline-block;
        }
        .site-footer friend-link a::before {
            content: "🔗 ";
        }
        .copyright {
            text-align: center;
            padding: 1.2rem 0 0.4rem;
            font-size: 0.9rem;
            color: #6a7a8a;
        }
        .copyright strong {
            color: #0a2a3a;
        }
        .last-update {
            text-align: right;
            font-size: 0.85rem;
            color: #8a9aaa;
            margin-top: 0.4rem;
        }
        .schema-hidden {
            display: none;
        }
        @media (max-width: 820px) {
            .container {
                padding: 1rem 1.2rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .link-panel ul {
                columns: 1;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 1rem 0 0.4rem;
                gap: 0.4rem;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .search-section {
                flex-direction: column;
                align-items: stretch;
                padding: 1.2rem 1.4rem;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section button {
                justify-content: center;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .site-footer friend-link {
                padding: 1rem 1.2rem;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 0.5rem;
            }
            .container {
                padding: 0.8rem 0.8rem;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .feedback-card {
                padding: 1.2rem 1.2rem;
            }
            .link-panel {
                padding: 1rem 1.2rem;
            }
        }
        .text-muted {
            color: #5a6a7a;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .emoji-lg {
            font-size: 1.6rem;
        }
        hr {
            border: none;
            border-top: 2px dashed #dce3ec;
            margin: 2rem 0;
        }
        .toc {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.4rem 2rem;
            margin: 1.6rem 0;
            border-left: 4px solid #ff7a2f;
        }
        .toc ul {
            list-style: none;
            margin: 0.4rem 0 0;
            padding: 0;
        }
        .toc li {
            padding: 0.2rem 0;
        }
        .toc a {
            font-weight: 500;
        }
        .toc a::before {
            content: "📌 ";
        }
        blockquote {
            border-left: 4px solid #0b5e7e;
            padding: 0.6rem 1.2rem;
            margin: 1.2rem 0;
            background: #f0f6fc;
            border-radius: 0 12px 12px 0;
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fef8f0, #fff4e6);
            border-radius: 16px;
            padding: 1.4rem 2rem;
            margin: 1.6rem 0;
            border: 1px solid #fae0c0;
        }
        .highlight-box strong {
            color: #b65a1a;
        }