* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
            background: #f8f9fb;
            color: #1a1a2e;
            line-height: 1.7;
            padding: 0 20px;
        }
        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.04);
            border-radius: 32px;
            padding: 24px 32px 40px;
            margin-top: 20px;
            margin-bottom: 20px;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0a3b5c;
            text-decoration: underline;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 16px;
            border-bottom: 2px solid #eef0f4;
            margin-bottom: 16px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #1a3a5c, #2d6a4f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #2d6a4f;
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1a1a2e;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #eef0f4;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
        }
        .main-nav a {
            font-weight: 500;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            font-size: 1rem;
        }
        .main-nav a:hover {
            border-bottom-color: #2d6a4f;
            text-decoration: none;
        }
        .breadcrumb {
            width: 100%;
            font-size: 0.85rem;
            color: #5a6a7a;
            margin-top: 10px;
            padding: 8px 0 4px;
            border-top: 1px solid #eef0f4;
            display: flex;
            flex-wrap: wrap;
            gap: 4px 8px;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb span {
            color: #8a9aa8;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 28px 0 12px;
            color: #0f1f2f;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 40px 0 16px;
            color: #14364b;
            border-left: 6px solid #2d6a4f;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: #1a4a3a;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 20px 0 8px;
            color: #2a5a4a;
        }
        p {
            margin-bottom: 16px;
            font-size: 1.05rem;
            color: #222;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #6a7a8a;
            text-align: right;
            margin-bottom: 24px;
            border-bottom: 1px dashed #dde0e6;
            padding-bottom: 12px;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .feature-img {
            width: 100%;
            max-width: 900px;
            height: auto;
            border-radius: 20px;
            margin: 24px 0 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            display: block;
        }
        .img-caption {
            font-size: 0.9rem;
            color: #5a6a7a;
            margin-bottom: 24px;
            text-align: center;
        }
        .search-section {
            background: #f0f4fa;
            border-radius: 20px;
            padding: 20px 24px;
            margin: 28px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .search-section label {
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form {
            display: flex;
            flex: 1 1 300px;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #d0d8e0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-form input:focus {
            border-color: #2d6a4f;
        }
        .search-form button {
            background: #1a3a5c;
            color: #fff;
            border: none;
            padding: 12px 24px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: #0f2a3f;
            transform: scale(1.02);
        }
        .user-feedback {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 36px 0;
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 20px;
            padding: 20px 24px;
            border: 1px solid #e4e8ee;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feedback-card input,
        .feedback-card textarea {
            padding: 10px 14px;
            border: 2px solid #d0d8e0;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border-color 0.2s;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus {
            border-color: #2d6a4f;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            background: #2d6a4f;
            color: #fff;
            border: none;
            padding: 10px 20px;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            align-self: flex-start;
            transition: background 0.2s, transform 0.1s;
        }
        .feedback-card button:hover {
            background: #1d4a3a;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5b342;
        }
        .related-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            background: #f4f7fb;
            padding: 16px 20px;
            border-radius: 16px;
            margin: 24px 0;
            font-size: 0.95rem;
        }
        .related-links a {
            font-weight: 500;
        }
        .related-links span {
            color: #5a6a7a;
        }
        friend-link {
            display: block;
            padding: 20px 0 6px;
            border-top: 2px solid #eef0f4;
            margin-top: 20px;
            font-size: 0.95rem;
        }
        friend-link a {
            margin: 0 12px 0 4px;
            font-weight: 500;
        }
        friend-link .label {
            font-weight: 600;
            color: #1a3a5c;
        }
        .site-footer {
            margin-top: 32px;
            padding-top: 16px;
            border-top: 1px solid #e0e4ec;
            font-size: 0.9rem;
            color: #5a6a7a;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
        }
        .site-footer .copyright {
            font-weight: 400;
        }
        @media (max-width: 768px) {
            .wrapper {
                padding: 16px 16px 32px;
                border-radius: 20px;
                margin-top: 12px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
                padding-left: 12px;
            }
            h3 {
                font-size: 1.2rem;
            }
            .site-header {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0 4px;
                gap: 6px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 8px 0;
                font-size: 1.05rem;
                border-bottom: 1px solid #eef0f4;
                width: 100%;
            }
            .user-feedback {
                grid-template-columns: 1fr;
            }
            .search-section {
                flex-direction: column;
                align-items: stretch;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .feature-img {
                border-radius: 14px;
            }
            .related-links {
                font-size: 0.85rem;
                padding: 12px 14px;
            }
            friend-link {
                font-size: 0.85rem;
            }
            .site-footer {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (min-width: 769px) {
            .main-nav {
                display: flex !important;
            }
        }
        .content-highlight {
            background: #f0f7f4;
            padding: 18px 22px;
            border-radius: 16px;
            border-left: 5px solid #2d6a4f;
            margin: 20px 0;
        }
        .emoji-bullet {
            margin-right: 6px;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .stat-card {
            background: #f4f8fc;
            border-radius: 14px;
            padding: 16px;
            text-align: center;
            border: 1px solid #e0e6ee;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #1a3a5c;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: #4a5a6a;
        }