*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #0b0e14;
            color: #e2e6ed;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #7ec8e3;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover,
        a:focus {
            color: #b5e4ff;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: #f0f4fa;
            letter-spacing: .01em;
        }
        h1 {
            font-size: 2.4rem;
            margin: 1.2rem 0 .8rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.4rem 0 .6rem;
            border-bottom: 2px solid #2a3340;
            padding-bottom: .3rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 .4rem;
            color: #d6e2f0;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 .3rem;
            color: #c0cee0;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
            width: 100%;
        }
        .site-header {
            background: #131a24;
            border-bottom: 1px solid #2a3340;
            padding: .6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(6px);
            background: rgba(15, 20, 28, .96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .6rem 1rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: #f0f4fa;
            letter-spacing: -.02em;
            display: flex;
            align-items: center;
            gap: .5rem;
            transition: opacity .2s;
        }
        .my-logo:hover {
            opacity: .88;
            text-decoration: none;
            color: #f0f4fa;
        }
        .my-logo i {
            color: #d4a84b;
            font-size: 1.4rem;
        }
        .my-logo span {
            font-weight: 300;
            font-size: .7rem;
            color: #8a9bb0;
            display: block;
            line-height: 1.2;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #e2e6ed;
            font-size: 1.6rem;
            cursor: pointer;
            padding: .2rem .4rem;
            border-radius: 4px;
            transition: background .2s;
        }
        .nav-toggle:hover {
            background: #1f2a36;
        }
        .primary-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .2rem .6rem;
        }
        .primary-nav a {
            padding: .35rem .7rem;
            border-radius: 6px;
            font-size: .9rem;
            color: #bcc9db;
            transition: background .2s, color .2s;
            white-space: nowrap;
        }
        .primary-nav a:hover,
        .primary-nav a:focus {
            background: #1f2a36;
            color: #fff;
            text-decoration: none;
        }
        .primary-nav a.active {
            background: #2a3a4a;
            color: #fff;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .3rem .6rem;
            font-size: .8rem;
            padding: .6rem 0 .2rem;
            color: #7a8aa0;
            list-style: none;
        }
        .breadcrumb li {
            display: inline;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: .5rem;
            color: #4a5a6a;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #7ec8e3;
        }
        .breadcrumb a:hover {
            color: #b5e4ff;
        }
        .breadcrumb .current {
            color: #b0c0d4;
        }
        .hero {
            background: linear-gradient(145deg, #0f1620, #1a2432);
            border-radius: 16px;
            padding: 2.4rem 2rem;
            margin: 1.2rem 0 2rem;
            border: 1px solid #2a3340;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 2rem;
        }
        .hero-text {
            flex: 2 1 280px;
        }
        .hero-text h1 {
            margin-top: 0;
            font-size: 2.2rem;
        }
        .hero-text p {
            font-size: 1.05rem;
            color: #b8c8dd;
            max-width: 680px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            margin-top: 1rem;
        }
        .hero-stats .stat {
            font-size: .95rem;
            color: #b0c4d8;
        }
        .hero-stats .stat strong {
            color: #f0f4fa;
            font-size: 1.2rem;
        }
        .hero-img {
            flex: 1 1 200px;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid #2f3a48;
            background: #1a2432;
            min-width: 160px;
        }
        .hero-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .search-section {
            margin: 1.6rem 0;
        }
        .search-form {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem;
            max-width: 640px;
            background: #131c26;
            border: 1px solid #2a3340;
            border-radius: 40px;
            padding: .3rem .3rem .3rem 1.2rem;
            transition: border-color .3s;
        }
        .search-form:focus-within {
            border-color: #7ec8e3;
        }
        .search-form input[type="text"] {
            flex: 1 1 180px;
            background: transparent;
            border: none;
            padding: .7rem 0;
            font-size: 1rem;
            color: #e2e6ed;
            outline: none;
            min-width: 0;
        }
        .search-form input[type="text"]::placeholder {
            color: #5a6a7a;
        }
        .search-form button {
            background: #2a3a4a;
            border: none;
            color: #e2e6ed;
            padding: .6rem 1.6rem;
            border-radius: 40px;
            font-size: .95rem;
            cursor: pointer;
            transition: background .2s, transform .1s;
            display: flex;
            align-items: center;
            gap: .5rem;
            white-space: nowrap;
        }
        .search-form button:hover {
            background: #3a4a5a;
            transform: scale(1.02);
        }
        .search-form button i {
            font-size: .9rem;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2rem;
            margin: 1.6rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            min-width: 0;
        }
        .sidebox {
            background: #131c26;
            border: 1px solid #2a3340;
            border-radius: 12px;
            padding: 1.2rem 1rem;
            margin-bottom: 1.6rem;
        }
        .sidebox h3 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: .8rem;
            color: #d6e2f0;
            border-bottom: 1px solid #2a3340;
            padding-bottom: .4rem;
        }
        .sidebox ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebox ul li {
            padding: .3rem 0;
            border-bottom: 1px solid #1f2a36;
        }
        .sidebox ul li:last-child {
            border-bottom: none;
        }
        .sidebox ul li a {
            color: #bcc9db;
            font-size: .9rem;
            display: block;
            padding: .15rem 0;
        }
        .sidebox ul li a:hover {
            color: #7ec8e3;
            text-decoration: none;
        }
        .article-body {
            background: #10171f;
            border-radius: 12px;
            padding: 1.6rem 1.8rem;
            border: 1px solid #1f2a36;
        }
        .article-body p {
            margin-bottom: 1.1rem;
            color: #dce2ec;
        }
        .article-body .highlight {
            background: #1a2634;
            border-left: 4px solid #d4a84b;
            padding: .8rem 1.2rem;
            border-radius: 0 8px 8px 0;
            margin: 1.2rem 0;
        }
        .article-body .highlight p:last-child {
            margin-bottom: 0;
        }
        .article-body .insight-box {
            background: #0c141f;
            border: 1px solid #2a3a4a;
            border-radius: 8px;
            padding: 1rem 1.4rem;
            margin: 1.4rem 0;
        }
        .article-body .insight-box .label {
            font-weight: 600;
            color: #d4a84b;
            font-size: .85rem;
            text-transform: uppercase;
            letter-spacing: .04em;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.2rem;
            color: #dce2ec;
        }
        .article-body li {
            margin-bottom: .3rem;
        }
        .article-body em {
            color: #b8cce0;
        }
        .article-body strong {
            color: #f0f4fa;
        }
        .last-updated {
            font-size: .8rem;
            color: #6a7a8a;
            text-align: right;
            margin-top: 1.6rem;
            border-top: 1px solid #1f2a36;
            padding-top: .8rem;
        }
        .interaction-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.4rem;
            margin: 2rem 0;
        }
        .interact-box {
            background: #10171f;
            border: 1px solid #1f2a36;
            border-radius: 12px;
            padding: 1.2rem 1.4rem;
        }
        .interact-box h3 {
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 1px solid #2a3340;
            padding-bottom: .4rem;
            margin-bottom: .8rem;
        }
        .interact-box form {
            display: flex;
            flex-direction: column;
            gap: .7rem;
        }
        .interact-box label {
            font-size: .9rem;
            color: #bcc9db;
        }
        .interact-box input,
        .interact-box textarea,
        .interact-box select {
            background: #0c141f;
            border: 1px solid #2a3340;
            border-radius: 8px;
            padding: .6rem .8rem;
            color: #e2e6ed;
            font-size: .95rem;
            font-family: inherit;
            outline: none;
            transition: border-color .3s;
        }
        .interact-box input:focus,
        .interact-box textarea:focus,
        .interact-box select:focus {
            border-color: #7ec8e3;
        }
        .interact-box textarea {
            resize: vertical;
            min-height: 80px;
        }
        .interact-box .btn-submit {
            background: #2a3a4a;
            border: none;
            color: #e2e6ed;
            padding: .6rem 1.4rem;
            border-radius: 40px;
            font-size: .95rem;
            cursor: pointer;
            transition: background .2s, transform .1s;
            align-self: flex-start;
        }
        .interact-box .btn-submit:hover {
            background: #3a4a5a;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: .2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.6rem;
            color: #3a4a5a;
            cursor: pointer;
            transition: color .2s, transform .1s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f0c040;
            transform: scale(1.1);
        }
        .site-footer {
            margin-top: auto;
            background: #0e141c;
            border-top: 1px solid #1f2a36;
            padding: 2rem 0 1.2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.6rem;
            margin-bottom: 1.6rem;
        }
        .footer-grid h4 {
            font-size: 1rem;
            color: #c8d6e6;
            margin-bottom: .6rem;
            border-bottom: 1px solid #1f2a36;
            padding-bottom: .3rem;
        }
        .footer-grid ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-grid ul li {
            padding: .15rem 0;
        }
        .footer-grid ul li a {
            font-size: .85rem;
            color: #8a9bb0;
        }
        .footer-grid ul li a:hover {
            color: #7ec8e3;
        }
        friend-link {
            display: block;
            font-size: .85rem;
            color: #8a9bb0;
            padding: .3rem 0;
        }
        friend-link a {
            color: #bcc9db;
            margin: 0 .3rem;
        }
        friend-link a:hover {
            color: #7ec8e3;
        }
        .copyright {
            font-size: .78rem;
            color: #5a6a7a;
            text-align: center;
            border-top: 1px solid #1a2432;
            padding-top: 1rem;
            margin-top: .4rem;
        }
        .copyright p {
            margin-bottom: .2rem;
        }
        @media (max-width: 820px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .interaction-section {
                grid-template-columns: 1fr;
            }
            .hero {
                flex-direction: column-reverse;
                padding: 1.6rem 1.2rem;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .article-body {
                padding: 1rem 1.2rem;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: .2rem;
                padding: .6rem 0 .2rem;
                border-top: 1px solid #1f2a36;
                margin-top: .4rem;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: .5rem .6rem;
                border-radius: 4px;
            }
            .search-form {
                border-radius: 28px;
                padding: .2rem .2rem .2rem 1rem;
            }
            .search-form button {
                padding: .5rem 1rem;
                font-size: .85rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .hero-stats {
                gap: .8rem 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 .8rem;
            }
            .hero-text h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.2rem;
            }
            .article-body {
                padding: .8rem .8rem;
            }
            .sidebox {
                padding: .8rem;
            }
            .interact-box {
                padding: .8rem;
            }
            .star-rating label {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0b0e14;
        }
        ::-webkit-scrollbar-thumb {
            background: #2a3340;
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3a4a5a;
        }
        :focus-visible {
            outline: 2px solid #7ec8e3;
            outline-offset: 2px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }