* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #f6f9fc;
            color: #1a2634;
            line-height: 1.7;
        }
        a {
            color: #0a6e4f;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus {
            color: #084c37;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f2b3d 0%, #1a4a5f 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            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: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f7d44a;
            text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.2);
            transition: transform 0.2s;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
            color: #f7d44a;
        }
        .my-logo span {
            color: #fff;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e6f0f5;
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #f7d44a;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.7rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background: #eaf0f5;
            padding: 0.6rem 0;
            font-size: 0.88rem;
            border-bottom: 1px solid #dce5ec;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem;
        }
        .breadcrumb a {
            color: #0a6e4f;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #7f8c9b;
            margin: 0 0.2rem;
        }
        .hero {
            background: linear-gradient(145deg, #eef5fa 0%, #dce8f0 100%);
            padding: 2.5rem 0 2rem;
            border-bottom: 4px solid #f7d44a;
        }
        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0f2b3d;
            line-height: 1.2;
            margin-bottom: 0.6rem;
        }
        .hero h1 i {
            color: #f7b84a;
        }
        .hero .sub {
            font-size: 1.15rem;
            color: #2c4a5e;
            max-width: 780px;
            margin-top: 0.3rem;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            margin-top: 0.8rem;
            font-size: 0.92rem;
            color: #3d5a6f;
        }
        .hero-meta i {
            margin-right: 0.3rem;
            color: #0a6e4f;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        .main-content h2 {
            font-size: 1.9rem;
            color: #0f2b3d;
            border-left: 5px solid #f7b84a;
            padding-left: 1rem;
            margin: 2.5rem 0 1rem;
            font-weight: 700;
        }
        .main-content h3 {
            font-size: 1.45rem;
            color: #1a4a5f;
            margin: 2rem 0 0.8rem;
            font-weight: 600;
        }
        .main-content h4 {
            font-size: 1.15rem;
            color: #2c5a6f;
            margin: 1.4rem 0 0.5rem;
            font-weight: 600;
        }
        .main-content p {
            margin-bottom: 1.1rem;
            font-size: 1.02rem;
            color: #1d2d3d;
        }
        .main-content .highlight-box {
            background: #e6f3ed;
            border-left: 4px solid #0a6e4f;
            padding: 1.2rem 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .main-content .highlight-box strong {
            color: #084c37;
        }
        .main-content .stat-badge {
            display: inline-block;
            background: #0f2b3d;
            color: #f7d44a;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 0.4rem;
        }
        .main-content .emoji-lg {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .feature-image-wrap {
            margin: 2rem 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.08);
        }
        .feature-image-wrap img {
            width: 100%;
            object-fit: cover;
        }
        .feature-image-wrap figcaption {
            background: #f1f6fa;
            padding: 0.5rem 1rem;
            font-size: 0.88rem;
            color: #3d5a6f;
            text-align: center;
        }
        .sidebar {
            position: sticky;
            top: 80px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 1.5rem;
            border: 1px solid #e8edf2;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            color: #0f2b3d;
            border-bottom: 2px solid #f7d44a;
            padding-bottom: 0.4rem;
            margin-bottom: 0.8rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f3f6;
        }
        .sidebar-card ul li a {
            color: #0a6e4f;
            font-weight: 500;
        }
        .sidebar-card ul li a:hover {
            color: #084c37;
        }
        .search-form {
            display: flex;
            gap: 0.3rem;
            margin: 0.8rem 0;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #dce5ec;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.25s;
        }
        .search-form input:focus {
            border-color: #0a6e4f;
        }
        .search-form button {
            background: #0a6e4f;
            color: #fff;
            border: none;
            padding: 0 1.3rem;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s;
        }
        .search-form button:hover {
            background: #084c37;
        }
        .feedback-section {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2rem 1.8rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
            margin: 2.5rem 0;
            border: 1px solid #e8edf2;
        }
        .feedback-section h3 {
            font-size: 1.5rem;
            color: #0f2b3d;
            margin-bottom: 1.2rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1a3a4a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce5ec;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.25s;
            background: #fafcfd;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #0a6e4f;
            outline: none;
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .form-row {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .form-row .form-group {
            flex: 1;
            min-width: 160px;
        }
        .star-rating {
            display: flex;
            gap: 0.15rem;
            font-size: 1.8rem;
            color: #d0d8e0;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating i {
            transition: color 0.15s, transform 0.15s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: #f7b84a;
            transform: scale(1.1);
        }
        .btn-submit {
            background: #0a6e4f;
            color: #fff;
            border: none;
            padding: 0.8rem 2.2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
        }
        .btn-submit:hover {
            background: #084c37;
            transform: translateY(-2px);
        }
        .btn-submit:active {
            transform: translateY(0);
        }
        .feedback-note {
            font-size: 0.88rem;
            color: #5d7a8a;
            margin-top: 0.6rem;
        }
        friend-link {
            display: block;
            background: #eaf0f5;
            padding: 1.5rem 2rem;
            border-radius: 16px;
            margin: 2rem 0 0.5rem;
            border: 1px solid #d5e0e8;
        }
        friend-link h3 {
            font-size: 1.2rem;
            color: #0f2b3d;
            margin-bottom: 0.7rem;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
        }
        friend-link ul li a {
            color: #0a6e4f;
            font-weight: 500;
        }
        friend-link ul li a:hover {
            color: #084c37;
        }
        .site-footer {
            background: #0f2b3d;
            color: #cbdae5;
            padding: 2rem 0 1.5rem;
            margin-top: 2rem;
            border-top: 4px solid #f7d44a;
        }
        .site-footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .site-footer .copyright {
            font-size: 0.88rem;
        }
        .site-footer .copyright strong {
            color: #f7d44a;
        }
        @media (max-width: 900px) {
            .content-wrap {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .main-content {
                order: 1;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 0.8rem;
                gap: 0.2rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 1rem;
                border-radius: 8px;
                background: rgba(255, 255, 255, 0.06);
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero .sub {
                font-size: 1rem;
            }
            .breadcrumb .container {
                font-size: 0.8rem;
            }
            .feedback-section {
                padding: 1.5rem;
            }
            .form-row {
                flex-direction: column;
                gap: 0;
            }
            .star-rating {
                font-size: 1.5rem;
            }
            friend-link ul {
                flex-direction: column;
                gap: 0.3rem;
            }
            .site-footer .container {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.9rem;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .main-content h2 {
                font-size: 1.4rem;
            }
            .main-content h3 {
                font-size: 1.2rem;
            }
            .main-content p {
                font-size: 0.95rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .search-form input {
                font-size: 0.85rem;
                padding: 0.5rem 0.8rem;
            }
            .search-form button {
                padding: 0 1rem;
                font-size: 0.9rem;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .badge {
            display: inline-block;
            background: #f7d44a;
            color: #0f2b3d;
            padding: 0.15rem 0.8rem;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 700;
        }
        .divider {
            border: 0;
            height: 2px;
            background: linear-gradient(to right, #dce5ec, transparent);
            margin: 1.8rem 0;
        }