*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f8f9fc;
            color: #1e1e2f;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2a6df4;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #1a4bbf;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0d0d1a;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1rem 0;
            border-bottom: 3px solid #2a6df4;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 0.7rem 0;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.5rem 0;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.1rem;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0.6rem 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            color: #0d0d1a;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #2a6df4, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .my-logo span {
            font-weight: 300;
            -webkit-text-fill-color: #555;
            color: #555;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: #1e1e2f;
            padding: 0.3rem 0.5rem;
        }
        .nav-menu {
            display: flex;
            gap: 1.2rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-menu a {
            font-weight: 500;
            color: #1e1e2f;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        .nav-menu a:hover {
            background: #eef2ff;
            color: #2a6df4;
            text-decoration: none;
        }
        .breadcrumb {
            background: #f0f2f5;
            padding: 0.5rem 0;
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #888;
        }
        .breadcrumb a {
            color: #2a6df4;
        }
        .breadcrumb .current {
            color: #555;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #0d0d1a 0%, #1a1a3e 100%);
            color: #fff;
            padding: 3rem 0 2.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 40px 40px;
        }
        .hero h1 {
            color: #fff;
            font-size: 2.6rem;
            margin-bottom: 0.5rem;
        }
        .hero p {
            font-size: 1.15rem;
            opacity: 0.9;
            max-width: 780px;
        }
        .hero .meta-info {
            font-size: 0.9rem;
            opacity: 0.7;
            margin-top: 1rem;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 1.2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef0f4;
        }
        .sidebar h3 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            border-bottom: 2px solid #2a6df4;
            padding-bottom: 0.4rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 0.5rem;
        }
        .sidebar a {
            display: block;
            padding: 0.3rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #f0f0f5;
        }
        .sidebar a:hover {
            padding-left: 0.3rem;
        }
        .featured-image {
            margin: 1.5rem 0;
            border-radius: 14px;
            overflow: hidden;
            background: #eef0f4;
        }
        .featured-image img {
            width: 100%;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #555;
            background: #f8f9fc;
        }
        .form-section {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 1.8rem 2rem;
            margin: 2.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            border: 1px solid #eef0f4;
        }
        .form-section h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1.5px solid #dde0e8;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fafbfd;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #2a6df4;
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background: #2a6df4;
            color: #fff !important;
            padding: 0.7rem 1.8rem;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            text-decoration: none !important;
        }
        .btn:hover {
            background: #1a4bbf;
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: #eef2ff;
            color: #2a6df4 !important;
        }
        .btn-secondary:hover {
            background: #dde4ff;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            cursor: pointer;
            color: #dde0e8;
            transition: color 0.15s;
        }
        .rating-stars .star.active {
            color: #f5b342;
        }
        .rating-stars .star:hover,
        .rating-stars .star.hover {
            color: #f5b342;
        }
        .comment-item {
            padding: 1rem 0;
            border-bottom: 1px solid #eef0f4;
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-item strong {
            color: #0d0d1a;
        }
        .comment-item .date {
            font-size: 0.8rem;
            color: #888;
            margin-left: 0.6rem;
        }
        friend-link {
            display: block;
            padding: 2rem 0 1rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 1rem 0.3rem 0;
            padding: 0.3rem 0.8rem;
            background: #f0f2f5;
            border-radius: 20px;
            font-size: 0.9rem;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #e0e4ee;
            text-decoration: none;
        }
        .site-footer {
            background: #0d0d1a;
            color: #ccc;
            padding: 2.5rem 0 1.8rem;
            margin-top: 3rem;
            border-radius: 40px 40px 0 0;
        }
        .site-footer .container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        .site-footer a {
            color: #aab;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .copyright {
            width: 100%;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.7;
            padding-top: 1.2rem;
            border-top: 1px solid #2a2a3e;
            margin-top: 1.2rem;
        }
        @media (max-width: 820px) {
            .content-wrap {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: -1;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 640px) {
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.5rem;
                padding: 1rem 0 0.5rem 0;
                border-top: 1px solid #eef0f4;
                margin-top: 0.6rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero {
                padding: 2rem 0 1.8rem 0;
            }
            .form-section {
                padding: 1.2rem;
            }
            .site-footer .container {
                flex-direction: column;
                text-align: center;
            }
            .my-logo {
                font-size: 1.3rem;
            }
        }
        .text-sm {
            font-size: 0.9rem;
        }
        .text-muted {
            color: #777;
        }
        .mt-2 {
            margin-top: 1.5rem;
        }
        .mb-1 {
            margin-bottom: 0.8rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag {
            display: inline-block;
            background: #eef2ff;
            color: #2a6df4;
            padding: 0.15rem 0.7rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .highlight-box {
            background: #f0f4ff;
            border-left: 4px solid #2a6df4;
            padding: 1rem 1.4rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }