* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #f7f5f0;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #2d6a4f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1b4332;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1b4332 0%, #2d6a4f 100%);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f8f9fa;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #d8f3dc;
        }
        .my-logo span {
            color: #95d5b2;
        }
        .hamburger {
            display: none;
            font-size: 28px;
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        nav {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #e9f5f0;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s;
            white-space: nowrap;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }
        nav a i {
            margin-right: 6px;
            font-size: 13px;
        }
        .breadcrumb {
            background: #edede4;
            padding: 12px 0;
            font-size: 13px;
            border-bottom: 1px solid #d8d4c8;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding: 0 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 8px;
            color: #7f7f7f;
        }
        .breadcrumb a {
            color: #2d6a4f;
        }
        .breadcrumb .current {
            color: #555;
            font-weight: 500;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 36px;
            font-weight: 800;
            color: #1b4332;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: #1b4332;
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #95d5b2;
        }
        .article-body h3 {
            font-size: 21px;
            font-weight: 600;
            color: #2d6a4f;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: #3a5a40;
            margin-top: 24px;
            margin-bottom: 10px;
        }
        .article-body p {
            margin-bottom: 18px;
            font-size: 16px;
            color: #2b2b2b;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 28px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body strong {
            color: #1b4332;
        }
        .article-body .highlight-box {
            background: #e9f5f0;
            border-left: 5px solid #2d6a4f;
            padding: 20px 24px;
            border-radius: 8px;
            margin: 24px 0;
        }
        .article-body .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .article-body .emoji-big {
            font-size: 28px;
            margin-right: 8px;
        }
        .featured-image {
            margin: 32px 0;
            border-radius: 14px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        }
        .featured-image figcaption {
            font-size: 13px;
            color: #666;
            text-align: center;
            margin-top: 10px;
            font-style: italic;
        }
        .last-updated {
            font-size: 14px;
            color: #666;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .last-updated i {
            color: #2d6a4f;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e8e4d8;
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #1b4332;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
        }
        .sidebar-card a {
            color: #2d6a4f;
            font-weight: 500;
            display: flex;
            align-items: baseline;
            gap: 6px;
        }
        .sidebar-card a::before {
            content: "▸";
            color: #95d5b2;
            font-weight: 700;
        }
        .sidebar-card a:hover {
            color: #1b4332;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 20px 0 28px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #d8d4c8;
            border-radius: 50px;
            font-size: 15px;
            outline: none;
            transition: border 0.3s;
            background: #fff;
        }
        .search-form input:focus {
            border-color: #2d6a4f;
        }
        .search-form button {
            background: #2d6a4f;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #1b4332;
            transform: scale(1.02);
        }
        .interaction-area {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid #e8e4d8;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #d8d4c8;
            border-radius: 12px;
            font-size: 15px;
            resize: vertical;
            min-height: 120px;
            font-family: inherit;
            transition: border 0.3s;
            background: #fff;
        }
        .comment-form textarea:focus {
            border-color: #2d6a4f;
            outline: none;
        }
        .comment-form input[type="text"] {
            width: 100%;
            padding: 12px 18px;
            border: 2px solid #d8d4c8;
            border-radius: 50px;
            font-size: 15px;
            margin-bottom: 12px;
            transition: border 0.3s;
            background: #fff;
        }
        .comment-form input[type="text"]:focus {
            border-color: #2d6a4f;
            outline: none;
        }
        .comment-form button,
        .rating-form button {
            background: #2d6a4f;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 28px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            font-size: 15px;
        }
        .comment-form button:hover,
        .rating-form button:hover {
            background: #1b4332;
            transform: scale(1.02);
        }
        .rating-form .stars {
            display: flex;
            gap: 6px;
            margin: 12px 0;
            font-size: 28px;
            color: #ccc;
            cursor: pointer;
        }
        .rating-form .stars i {
            transition: color 0.2s, transform 0.2s;
        }
        .rating-form .stars i:hover,
        .rating-form .stars i.active {
            color: #f4c430;
            transform: scale(1.1);
        }
        .rating-form .stars i.selected {
            color: #f4c430;
        }
        .rating-form input[type="hidden"] {
            display: none;
        }
        friend-link {
            display: block;
            padding: 20px 0;
        }
        friend-link .friend-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            list-style: none;
            padding: 0;
        }
        friend-link .friend-list li a {
            color: #2d6a4f;
            font-weight: 500;
            font-size: 14px;
        }
        friend-link .friend-list li a::before {
            content: "🔗 ";
        }
        footer {
            background: #1b4332;
            color: #e9f5f0;
            padding: 40px 0 24px;
            margin-top: 40px;
        }
        footer .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer h4 {
            font-size: 18px;
            color: #95d5b2;
            margin-bottom: 16px;
        }
        footer p,
        footer a {
            color: #d8f3dc;
            font-size: 14px;
        }
        footer a:hover {
            color: #fff;
        }
        footer .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 24px;
            font-size: 13px;
            color: #a7c8b8;
        }
        .nav-open nav {
            display: flex;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(27, 67, 50, 0.98);
                padding: 16px 0;
                border-radius: 12px;
                margin-top: 12px;
                gap: 2px;
            }
            nav a {
                padding: 12px 20px;
                border-radius: 0;
                width: 100%;
                text-align: left;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .header-inner {
                position: relative;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .article-body h1 {
                font-size: 28px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
        }
        @media (min-width: 769px) {
            nav {
                display: flex !important;
            }
        }
        .schema-hidden {
            display: none;
        }
        .btn-submit:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        .toast-msg {
            background: #2d6a4f;
            color: #fff;
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 14px;
            display: inline-block;
            margin-top: 10px;
            animation: fadeIn 0.3s;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }