*,
        *::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, Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #12141a;
            color: #e3e6ec;
            line-height: 1.75;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #ffc857;
            text-decoration: none;
            transition: color .2s ease, border-bottom .2s;
            border-bottom: 1px solid transparent;
        }
        a:hover {
            color: #ff9f1c;
            border-bottom-color: #ff9f1c;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 2.1rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -1px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            border: none;
            text-transform: uppercase;
            background: linear-gradient(120deg, #ffc857, #ff6b35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo i {
            -webkit-text-fill-color: #ffc857;
            font-size: 1.8rem;
        }
        .site-header {
            background: rgba(18, 20, 26, .92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 200, 87, .2);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 12px 0;
            gap: 10px;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #cfd2d9;
            padding: 8px 14px;
            border-radius: 8px;
            font-weight: 600;
            font-size: .88rem;
            border: none;
        }
        .nav-menu a:hover {
            background: rgba(255, 200, 87, .12);
            color: #ffc857;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: 2px solid rgba(255, 200, 87, .5);
            border-radius: 8px;
            color: #ffc857;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 8px 12px;
            transition: all .2s;
        }
        .hamburger:hover {
            background: rgba(255, 200, 87, .1);
        }
        #menuToggle {
            display: none;
        }
        #menuToggle:checked~.nav-menu {
            display: flex;
            flex-direction: column;
            width: 100%;
            background: rgba(0, 0, 0, .6);
            padding: 20px;
            border-radius: 12px;
            margin-top: 10px;
        }
        .breadcrumb-wrap {
            background: #191c24;
            border-bottom: 1px solid rgba(255, 200, 87, .08);
            padding: 10px 0;
            font-size: .8rem;
        }
        .breadcrumb {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 7px;
            color: #5f6a7a;
        }
        .breadcrumb a {
            color: #8e98a5;
        }
        .breadcrumb .active {
            color: #ffc857;
        }
        .hero-cover {
            background: linear-gradient(145deg, #1a1625 0%, #251e35 35%, #1e1b2e 70%, #12141a 100%);
            padding: 70px 0 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-cover::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 107, 53, .2), transparent 65%);
            filter: blur(40px);
        }
        .hero-cover h1 {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
            font-weight: 900;
            background: linear-gradient(135deg, #ffc857 20%, #ff7b3a 50%, #ffc857 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
            letter-spacing: -1px;
            line-height: 1.2;
            position: relative;
            z-index: 2;
        }
        .hero-cover .subhead {
            color: #b0a7c0;
            font-size: clamp(1rem, 2vw, 1.25rem);
            max-width: 700px;
            margin: 12px auto 24px;
        }
        .hero-meta {
            display: flex;
            justify-content: center;
            gap: 15px 30px;
            flex-wrap: wrap;
            font-size: .85rem;
            color: #8e98a5;
        }
        .hero-meta i {
            color: #ffc857;
            margin-right: 4px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 60px 0 80px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            border-left: 1px solid rgba(255, 200, 87, .1);
            padding-left: 30px;
        }
        @media(max-width:992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                border-left: none;
                padding-left: 0;
                border-top: 1px solid rgba(255, 200, 87, .1);
                padding-top: 20px;
                margin-top: 30px;
            }
        }
        .card {
            background: rgba(255, 255, 255, .03);
            border: 1px solid rgba(255, 255, 255, .05);
            border-radius: 16px;
            padding: 28px;
            margin-bottom: 35px;
        }
        .toc-card {
            background: linear-gradient(135deg, rgba(255, 200, 87, .06), rgba(255, 107, 53, .03));
            border-radius: 16px;
            padding: 25px 25px 25px 30px;
            border: 1px solid rgba(255, 200, 87, .15);
            margin-bottom: 40px;
        }
        .toc-card h2 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: #ffc857;
        }
        .toc-list {
            list-style: none;
            columns: 2;
            column-gap: 30px;
        }
        .toc-list a {
            display: block;
            padding: 5px 0;
            color: #aeb5c1;
            font-size: .9rem;
        }
        .toc-list a:hover {
            color: #ffc857;
        }
        @media(max-width:600px) {
            .toc-list {
                columns: 1;
            }
        }
        h2 {
            font-size: 2rem;
            margin: 50px 0 18px;
            color: #fff;
            font-weight: 800;
            line-height: 1.3;
            position: relative;
            padding-left: 18px;
        }
        h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(to bottom, #ffc857, #ff7b3a);
        }
        h3 {
            font-size: 1.45rem;
            margin: 35px 0 12px;
            color: #eae4d3;
            font-weight: 700;
        }
        h4 {
            font-size: 1.15rem;
            margin: 22px 0 10px;
            color: #ffc985;
            font-weight: 600;
        }
        .main-content p {
            margin-bottom: 16px;
            color: #c9cdd6;
        }
        .main-content strong {
            color: #fff;
            font-weight: 700;
        }
        .featured-img {
            margin: 25px 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, .3);
        }
        .featured-img img {
            width: 100%;
            object-fit: cover;
        }
        .featured-img figcaption {
            padding: 12px 18px;
            background: rgba(255, 200, 87, .07);
            font-size: .85rem;
            color: #a5a0b3;
            text-align: center;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, .06);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: .92rem;
            background: rgba(0, 0, 0, .15);
        }
        th {
            background: rgba(255, 200, 87, .10);
            color: #ffc857;
            text-align: left;
            padding: 12px 15px;
            font-weight: 700;
        }
        td {
            padding: 12px 15px;
            border-top: 1px solid rgba(255, 255, 255, .05);
            color: #bdc3cf;
        }
        tr:hover td {
            background: rgba(255, 200, 87, .03);
        }
        .form-box {
            background: rgba(255, 255, 255, .03);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 16px;
            padding: 30px;
            margin-bottom: 40px;
        }
        .form-box h2 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
            color: #cfd2d9;
            font-size: .9rem;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid rgba(255, 255, 255, .1);
            background: rgba(0, 0, 0, .3);
            border-radius: 10px;
            color: #fff;
            font-family: inherit;
            font-size: .95rem;
            transition: border-color .2s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #ffc857;
        }
        .btn {
            background: linear-gradient(135deg, #ff9f1c, #ff6b35);
            color: #12141a;
            border: none;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: .95rem;
            cursor: pointer;
            transition: transform .2s, box-shadow .2s;
            display: inline-block;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 159, 28, .3);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-start;
            gap: 5px;
            direction: ltr;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #3a3f4b;
            cursor: pointer;
            transition: color .2s;
            padding: 0 2px;
        }
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #ffc857;
        }
        .star-rating input:checked~label {
            color: #ffc857;
        }
        .widget {
            background: rgba(255, 255, 255, .03);
            border-radius: 16px;
            padding: 22px;
            margin-bottom: 30px;
            font-size: .9rem;
        }
        .widget h3 {
            font-size: 1.15rem;
            margin: 0 0 15px;
            color: #ffc857;
        }
        .widget ul {
            list-style: none;
        }
        .widget li {
            margin-bottom: 8px;
        }
        .widget a {
            color: #b0b8c8;
        }
        .site-footer {
            background: #0a0b0f;
            border-top: 1px solid rgba(255, 200, 87, .1);
            padding: 40px 0 25px;
            font-size: .88rem;
            color: #777;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 20px;
        }
        .footer-grid h4 {
            color: #ffc857;
            margin-bottom: 10px;
            font-size: 1rem;
        }
        .footer-grid ul {
            list-style: none;
        }
        .footer-grid li {
            margin-bottom: 6px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 200, 87, .08);
            padding-top: 20px;
            text-align: center;
            font-size: .82rem;
            line-height: 1.8;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            padding: 6px 0;
        }
        friend-link a {
            color: #8e98a5;
            margin: 0 6px;
        }
        friend-link a:hover {
            color: #ffc857;
        }
        .callout {
            background: linear-gradient(135deg,
                rgba(255, 200, 87, .1), rgba(255, 107, 53, .06));
            border-left: 4px solid #ffc857;
            border-radius: 0 14px 14px 0;
            padding: 20px 24px;
            margin: 25px 0;
        }
        .callout p {
            margin-bottom: 8px;
        }
        .callout p:last-child {
            margin: 0;
        }
        .pro-tip {
            background: rgba(80, 200, 120, .07);
            border-left-color: #4cd07a;
        }
        .warning {
            background: rgba(220, 80, 80, .06);
            border-left-color: #e05555;
        }
        .styled-list {
            padding-left: 22px;
            margin-bottom: 16px;
        }
        .styled-list li {
            margin-bottom: 9px;
            position: relative;
        }
        .styled-list li::marker {
            color: #ffc857;
        }
        @media(max-width:768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                order: 3;
                background: #191c24;
                border-radius: 14px;
                padding: 16px;
            }
            .hamburger {
                display: inline-block;
            }
            #menuToggle:checked~.nav-menu {
                display: flex;
            }
            .nav-menu a {
                display: block;
                padding: 12px 8px;
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @media(max-width:480px) {
            .header-inner {
                padding: 8px 0;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            .card,
            .form-box {
                padding: 18px;
            }
        }