*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --bg: #0f0e17;
            --surface: #1a1a2e;
            --surface2: #16213e;
            --primary: #ff6b6b;
            --primary-light: #ff9f9f;
            --accent: #f9c74f;
            --accent2: #4cc9f0;
            --text: #fffffe;
            --text-muted: #a7a9be;
            --border: #2d2d44;
            --radius: 12px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent2);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-pad {
            padding: 60px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1.25rem;
            color: var(--accent);
            letter-spacing: -0.02em;
            border-left: 5px solid var(--primary);
            padding-left: 1rem;
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            max-width: 720px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            text-decoration: none;
        }
        .btn:hover {
            background: #e05555;
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-primary {
            color: var(--primary);
        }
        .text-muted {
            color: var(--text-muted);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 14, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .my-logo {
            font-size: 1.55rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo:hover {
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--accent);
            font-size: 1.4rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }
        .nav-list li a {
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: background 0.3s, color 0.3s;
            text-decoration: none;
        }
        .nav-list li a:hover {
            background: var(--surface);
            color: var(--text);
            text-decoration: none;
        }
        .nav-list li a.active {
            background: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            z-index: 1100;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--text);
            border-radius: 4px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(6px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }
        .nav-mobile {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: rgba(15, 14, 23, 0.98);
            backdrop-filter: blur(18px);
            padding: 20px 24px 32px;
            border-bottom: 2px solid var(--border);
            z-index: 999;
            max-height: calc(100vh - var(--header-h));
            overflow-y: auto;
        }
        .nav-mobile.open {
            display: block;
        }
        .nav-mobile ul {
            list-style: none;
        }
        .nav-mobile ul li a {
            display: block;
            padding: 12px 0;
            font-size: 1.05rem;
            border-bottom: 1px solid var(--border);
            color: var(--text-muted);
            text-decoration: none;
        }
        .nav-mobile ul li a:hover {
            color: var(--text);
        }
        .breadcrumb-wrap {
            background: var(--surface);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        .breadcrumb a {
            color: var(--accent2);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }
        .hero {
            padding: 60px 0 48px;
            background: linear-gradient(160deg, var(--surface2) 0%, var(--bg) 70%);
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 107, 107, 0.12), transparent 70%);
            pointer-events: none;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 1rem;
            max-width: 860px;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 1.8rem;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .hero-meta i {
            margin-right: 6px;
            color: var(--accent);
        }
        .content-area {
            padding: 48px 0 60px;
        }
        .content-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 32px 36px;
            margin-bottom: 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .content-card h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--accent);
        }
        .content-card h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin: 1.5rem 0 0.75rem;
            color: var(--primary-light);
        }
        .content-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 1.2rem 0 0.5rem;
            color: var(--accent2);
        }
        .content-card p {
            margin-bottom: 1.1rem;
            color: var(--text);
            font-size: 1.02rem;
        }
        .content-card ul,
        .content-card ol {
            margin: 0.8rem 0 1.2rem 1.4rem;
            color: var(--text-muted);
        }
        .content-card li {
            margin-bottom: 0.5rem;
        }
        .content-card .highlight-box {
            background: var(--surface2);
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.2rem 0;
        }
        .content-card .highlight-box strong {
            color: var(--accent);
        }
        .figure-img {
            margin: 1.8rem 0;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--surface2);
            padding: 8px;
        }
        .figure-img img {
            border-radius: calc(var(--radius) - 4px);
            width: 100%;
            object-fit: cover;
        }
        .figure-img figcaption {
            padding: 10px 8px 4px;
            font-size: 0.85rem;
            color: var(--text-muted);
            text-align: center;
            font-style: italic;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 12px;
            margin: 1.2rem 0;
        }
        .link-grid a {
            display: block;
            padding: 10px 16px;
            background: var(--surface2);
            border-radius: 8px;
            border: 1px solid var(--border);
            transition: background 0.25s, border-color 0.25s;
            font-size: 0.92rem;
            text-decoration: none;
            color: var(--accent2);
        }
        .link-grid a:hover {
            background: var(--bg);
            border-color: var(--primary);
            color: var(--accent);
            text-decoration: none;
        }
        .link-grid a i {
            margin-right: 8px;
            color: var(--primary);
        }
        .search-wrap {
            display: flex;
            gap: 0;
            max-width: 560px;
            margin: 1.2rem 0;
            border-radius: 50px;
            overflow: hidden;
            border: 2px solid var(--border);
            transition: border-color 0.3s;
        }
        .search-wrap:focus-within {
            border-color: var(--primary);
        }
        .search-wrap input {
            flex: 1;
            padding: 14px 20px;
            background: var(--bg);
            border: none;
            color: var(--text);
            font-size: 0.95rem;
            outline: none;
        }
        .search-wrap input::placeholder {
            color: var(--text-muted);
        }
        .search-wrap button {
            padding: 14px 24px;
            background: var(--primary);
            border: none;
            color: #fff;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            font-size: 0.95rem;
        }
        .search-wrap button:hover {
            background: #e05555;
        }
        .review-item {
            background: var(--surface2);
            padding: 20px 24px;
            border-radius: var(--radius);
            margin-bottom: 16px;
            border: 1px solid var(--border);
        }
        .review-item .review-author {
            font-weight: 600;
            color: var(--accent);
        }
        .review-item .review-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .review-item .review-stars {
            color: var(--accent);
            margin: 4px 0 8px;
            font-size: 1.1rem;
        }
        .review-item p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .rating-summary {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
        }
        .rating-summary .big-star {
            font-size: 2.4rem;
            color: var(--accent);
        }
        .rating-summary .score-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text);
        }
        .rating-summary .score-label {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 500;
            margin-bottom: 6px;
            color: var(--text-muted);
            font-size: 0.92rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text);
            font-size: 0.95rem;
            transition: border-color 0.3s;
            font-family: var(--font);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        footer {
            background: var(--surface);
            border-top: 2px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        footer h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 1rem;
        }
        footer p,
        footer a {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        footer a:hover {
            color: var(--accent);
        }
        footer .copyright {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        footer .copyright strong {
            color: var(--text);
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            display: inline-block;
            margin: 0 12px 8px 0;
            padding: 6px 14px;
            background: var(--surface2);
            border-radius: 20px;
            font-size: 0.85rem;
            border: 1px solid var(--border);
            transition: 0.25s;
            text-decoration: none;
        }
        friend-link a:hover {
            border-color: var(--primary);
            background: var(--bg);
            text-decoration: none;
        }
        @media (max-width: 992px) {
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr !important;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
            .content-card {
                padding: 24px 20px;
            }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .content-card h2 {
                font-size: 1.4rem;
            }
            .content-card h3 {
                font-size: 1.15rem;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr !important;
                gap: 24px;
            }
            .rating-summary {
                flex-direction: column;
                align-items: flex-start;
            }
            .link-grid {
                grid-template-columns: 1fr;
            }
            .search-wrap {
                flex-direction: column;
                border-radius: 12px;
            }
            .search-wrap input {
                border-radius: 0;
            }
            .search-wrap button {
                border-radius: 0;
            }
        }
        @media (max-width: 480px) {
            :root {
                --header-h: 60px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .container {
                padding: 0 14px;
            }
            .content-card {
                padding: 18px 14px;
            }
            .breadcrumb {
                font-size: 0.72rem;
                gap: 4px 8px;
            }
        }
        @media (prefers-reduced-motion: no-preference) {
            .fade-up {
                opacity: 0;
                transform: translateY(24px);
                transition: opacity 0.6s ease, transform 0.6s ease;
            }
            .fade-up.visible {
                opacity: 1;
                transform: translateY(0);
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }