*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fc;
            color: #1a1d29;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2a6df4;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: #0d3ea8;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 .4rem;
            color: #0b1a33;
            letter-spacing: -.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 2.4rem 0 .8rem;
            color: #0f2240;
            border-bottom: 3px solid #2a6df4;
            padding-bottom: .4rem;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 1.8rem 0 .5rem;
            color: #1a2d4e;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1.2rem 0 .3rem;
            color: #1f3760;
        }
        p {
            margin: 0 0 1.2rem;
        }
        .lead {
            font-size: 1.2rem;
            color: #2c3e5c;
            font-weight: 400;
            max-width: 800px;
        }
        .site-header {
            background: #0b1a33;
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, .18);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: .7rem 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -.02em;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo i {
            color: #5a8cff;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #b0ccff;
        }
        .my-logo span {
            color: #7aa5ff;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #d6e0f0;
            font-weight: 500;
            font-size: .95rem;
            padding: .3rem 0;
            border-bottom: 2px solid transparent;
            transition: .2s;
        }
        .main-nav a:hover {
            color: #fff;
            border-bottom-color: #5a8cff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0 4px;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #eef2f9;
            padding: .5rem 20px;
            font-size: .9rem;
            border-bottom: 1px solid #dce3ef;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: .4rem .8rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: .8rem;
            color: #6f7d98;
        }
        .breadcrumb a {
            color: #2a6df4;
        }
        .breadcrumb .current {
            color: #4a5a7a;
            font-weight: 500;
        }
        .hero {
            background: linear-gradient(145deg, #0b1a33 0%, #1a3068 100%);
            color: #fff;
            padding: 3rem 20px 2.6rem;
        }
        .hero .container {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .hero h1 {
            color: #fff;
            font-size: 2.8rem;
        }
        .hero .lead {
            color: #c8d8ff;
            font-size: 1.25rem;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            font-size: .95rem;
            color: #a8bef0;
        }
        .hero-meta i {
            margin-right: 6px;
            color: #5a8cff;
        }
        .content {
            padding: 2.4rem 0 3rem;
        }
        .content .container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.4rem;
        }
        .content-main {
            min-width: 0;
        }
        .content-sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .card {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .05);
            margin-bottom: 1.8rem;
            transition: box-shadow .25s;
        }
        .card:hover {
            box-shadow: 0 8px 32px rgba(0, 0, 0, .08);
        }
        .card h3 {
            margin-top: 0;
        }
        .feature-image {
            border-radius: 14px;
            margin: 1.6rem 0 2rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, .08);
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .styled-list {
            padding-left: 1.4rem;
            margin: .6rem 0 1.4rem;
        }
        .styled-list li {
            margin-bottom: .5rem;
        }
        .two-col-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: .6rem 1.6rem;
            padding-left: 0;
            list-style: none;
        }
        .two-col-list li::before {
            content: "▸ ";
            color: #2a6df4;
            font-weight: 700;
        }
        .sidebar-widget {
            background: #fff;
            border-radius: 14px;
            padding: 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, .04);
            margin-bottom: 1.6rem;
        }
        .sidebar-widget h4 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 2px solid #e8edf6;
            padding-bottom: .5rem;
        }
        .side-links {
            list-style: none;
            padding: 0;
        }
        .side-links li {
            padding: .4rem 0;
            border-bottom: 1px solid #f0f3fa;
        }
        .side-links a {
            font-weight: 500;
            display: block;
        }
        .form-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, .05);
            margin: 1.6rem 0;
        }
        .form-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: .95rem;
            margin-bottom: .3rem;
            color: #1f3760;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: .7rem 1rem;
            border: 1.5px solid #dce3ef;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: .2s;
            background: #fafbff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #2a6df4;
            box-shadow: 0 0 0 3px rgba(42, 109, 244, .12);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: .7rem 1.8rem;
            border: none;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: .2s;
            background: #2a6df4;
            color: #fff;
        }
        .btn:hover {
            background: #0d3ea8;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(42, 109, 244, .25);
        }
        .btn-secondary {
            background: #e8edf6;
            color: #1a2d4e;
        }
        .btn-secondary:hover {
            background: #d0d9ed;
            transform: none;
            box-shadow: none;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 4px;
            font-size: 2rem;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #d0d7e6;
            transition: .15s;
        }
        .star-rating label i {
            font-size: 2rem;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5b342;
        }
        .comment-item {
            padding: 1rem 0;
            border-bottom: 1px solid #edf1f8;
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-author {
            font-weight: 700;
            color: #0b1a33;
        }
        .comment-date {
            font-size: .85rem;
            color: #6f7d98;
            margin-left: 1rem;
        }
        .comment-text {
            margin-top: .3rem;
            color: #2c3e5c;
        }
        friend-link {
            display: block;
            background: #f0f4fe;
            border-radius: 14px;
            padding: 1.6rem 2rem;
            margin-top: 2rem;
        }
        friend-link .fl-head {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: .6rem;
            color: #0b1a33;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            gap: .8rem 1.6rem;
            list-style: none;
            padding: 0;
        }
        friend-link .fl-list a {
            font-weight: 500;
        }
        .site-footer {
            background: #0b1a33;
            color: #b0c4e8;
            padding: 2rem 20px 1.6rem;
            font-size: .92rem;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            gap: .8rem;
            align-items: center;
            text-align: center;
        }
        .site-footer .copyright {
            color: #7a92b8;
            font-size: .88rem;
        }
        .site-footer a {
            color: #8aadff;
        }
        @media (max-width: 992px) {
            .content .container {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                position: static;
                order: 2;
            }
            .content-main {
                order: 1;
            }
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .hero h1 {
                font-size: 2.1rem;
            }
            .header-inner {
                padding: .5rem 16px;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: .8rem 0 .4rem;
                gap: .4rem;
            }
            .main-nav a {
                padding: .5rem 0;
                border-bottom: none;
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            #nav-toggle:checked~.main-nav {
                display: flex;
            }
            .two-col-list {
                grid-template-columns: 1fr;
            }
            .hero-meta {
                flex-direction: column;
                gap: .4rem;
            }
            .form-card {
                padding: 1.2rem;
            }
            .star-rating {
                font-size: 1.6rem;
            }
            .star-rating label i {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .card {
                padding: 1.2rem;
            }
            .sidebar-widget {
                padding: 1rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
        }
        .mt-0 {
            margin-top: 0 !important;
        }
        .mb-0 {
            margin-bottom: 0 !important;
        }
        .gap-1 {
            gap: .5rem;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .items-center {
            align-items: center;
        }
        .text-muted {
            color: #5a6e8a;
        }
        .badge {
            display: inline-block;
            background: #eef2f9;
            border-radius: 20px;
            padding: .15rem .8rem;
            font-size: .8rem;
            font-weight: 600;
            color: #1f3760;
        }
        .highlight {
            background: #fcf4d9;
            padding: .1rem .3rem;
            border-radius: 4px;
        }