*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f7f9fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0f766e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0d9488;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        header {
            background: #ffffff;
            border-bottom: 2px solid #e2e8f0;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
            background: rgba(255, 255, 255, 0.95);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0f766e;
            letter-spacing: -0.5px;
            text-decoration: none;
            background: linear-gradient(135deg, #0f766e, #0d9488);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.85;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            color: #64748b;
            -webkit-text-fill-color: #64748b;
            background: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0f766e;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e2e8f0;
        }
        nav {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            font-weight: 600;
            color: #1e293b;
            padding: 0.25rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover {
            background: #e2e8f0;
            color: #0f766e;
            text-decoration: none;
        }
        nav a i {
            margin-right: 0.3rem;
        }
        .breadcrumb {
            padding: 0.75rem 0;
            font-size: 0.9rem;
            color: #64748b;
            background: transparent;
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.5rem;
            color: #94a3b8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #0f766e;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0 3rem;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0f172a;
            margin: 1.5rem 0 0.75rem;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0f172a;
            margin: 2.5rem 0 0.75rem;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #0f766e;
            display: inline-block;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1e293b;
            margin: 1.8rem 0 0.5rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #334155;
            margin: 1.2rem 0 0.4rem;
        }
        p {
            margin-bottom: 1.1rem;
            color: #334155;
        }
        .lead {
            font-size: 1.2rem;
            color: #1e293b;
            font-weight: 400;
            line-height: 1.8;
            background: #eef2f6;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            border-left: 5px solid #0f766e;
        }
        .highlight {
            background: #f0fdf4;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
            color: #0f766e;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 1rem 0 1.5rem;
            color: #64748b;
            font-size: 0.95rem;
        }
        .meta-info span i {
            margin-right: 0.3rem;
        }
        .last-updated {
            font-weight: 600;
            color: #0f766e;
        }
        .feature-box {
            background: #ffffff;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin: 2rem 0;
            border: 1px solid #e2e8f0;
        }
        .feature-box h3 {
            margin-top: 0;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .link-grid a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            background: #f1f5f9;
            padding: 0.75rem 1rem;
            border-radius: 10px;
            font-weight: 500;
            color: #1e293b;
            transition: background 0.2s, transform 0.1s;
            border: 1px solid transparent;
        }
        .link-grid a:hover {
            background: #e2e8f0;
            transform: translateY(-2px);
            border-color: #0f766e;
            text-decoration: none;
        }
        .link-grid a i {
            color: #0f766e;
            font-size: 1.2rem;
            width: 1.6rem;
            text-align: center;
        }
        .img-wrapper {
            margin: 2rem 0;
            background: #fff;
            border-radius: 16px;
            padding: 0.75rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .img-wrapper img {
            border-radius: 10px;
            width: 100%;
        }
        .img-wrapper figcaption {
            text-align: center;
            padding: 0.75rem 0 0.25rem;
            font-size: 0.9rem;
            color: #64748b;
            font-style: italic;
        }
        .form-section {
            background: #ffffff;
            border-radius: 16px;
            padding: 2rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin: 2.5rem 0;
            border: 1px solid #e2e8f0;
        }
        .form-section h2 {
            margin-top: 0;
            border-bottom: none;
            display: block;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1e293b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fafafa;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #0f766e;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            padding: 0.7rem 2rem;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary {
            background: #0f766e;
            color: #fff;
        }
        .btn-primary:hover {
            background: #0d9488;
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1e293b;
        }
        .btn-secondary:hover {
            background: #cbd5e1;
        }
        .rating-stars {
            display: flex;
            gap: 0.25rem;
            font-size: 1.8rem;
            color: #f59e0b;
            cursor: pointer;
            flex-direction: row-reverse;
            justify-content: flex-end;
        }
        .rating-stars i {
            transition: transform 0.15s, color 0.15s;
        }
        .rating-stars i:hover,
        .rating-stars i:hover~i {
            color: #f59e0b;
            transform: scale(1.2);
        }
        .rating-stars i.fa-star {
            color: #f59e0b;
        }
        .rating-stars i.fa-star-o {
            color: #cbd5e1;
        }
        .comment-item {
            background: #f8fafc;
            padding: 1rem 1.2rem;
            border-radius: 12px;
            margin-bottom: 1rem;
            border-left: 4px solid #0f766e;
        }
        .comment-item .author {
            font-weight: 700;
            color: #0f172a;
        }
        .comment-item .date {
            font-size: 0.85rem;
            color: #94a3b8;
            margin-left: 1rem;
        }
        .comment-item .text {
            margin-top: 0.3rem;
            color: #334155;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 2.5rem 0 1.5rem;
            border-radius: 24px 24px 0 0;
            margin-top: 3rem;
        }
        footer .container {
            padding: 0 1.5rem;
        }
        footer a {
            color: #94a3b8;
        }
        footer a:hover {
            color: #f1f5f9;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-grid h4 {
            color: #f1f5f9;
            margin-bottom: 0.8rem;
            font-weight: 600;
        }
        .footer-grid ul {
            list-style: none;
            padding: 0;
        }
        .footer-grid ul li {
            margin-bottom: 0.4rem;
        }
        .footer-grid ul li a {
            font-size: 0.95rem;
        }
        friend-link {
            display: block;
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #1e293b;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.4rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            border-top: 1px solid #1e293b;
            font-size: 0.9rem;
            color: #64748b;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0.5rem;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid #e2e8f0;
                margin-top: 0.5rem;
            }
            nav.open {
                display: flex;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .meta-info {
                flex-direction: column;
                gap: 0.5rem;
            }
            .link-grid {
                grid-template-columns: 1fr 1fr;
            }
            .form-section {
                padding: 1.2rem;
            }
            .lead {
                font-size: 1.05rem;
                padding: 1rem;
            }
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .link-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        .empty-state {
            color: #94a3b8;
            font-style: italic;
            padding: 1rem 0;
        }
        .toggle-target {
            transition: all 0.25s ease;
        }