* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 1.0625rem;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #e63946;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b71c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.25;
            color: #0b1a2a;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.8rem;
            margin-bottom: 0.75rem;
            border-left: 5px solid #e63946;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 1.8rem;
            margin-bottom: 0.5rem;
            color: #1d3557;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
            color: #2b2d42;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 0.8rem 0 1.2rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        hr {
            border: none;
            border-top: 2px dashed #d2d6e0;
            margin: 2.5rem 0;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: #0b1a2a;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: linear-gradient(135deg, #e63946, #f77f00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #e63946;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.6rem;
            font-weight: 400;
            -webkit-text-fill-color: #aaa;
            letter-spacing: 0.3px;
            display: block;
            margin-top: -4px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
        }
        .main-nav a {
            color: #eaeef2;
            padding: 0.4rem 0.8rem;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 0.3rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.main-nav {
            display: flex;
            flex-direction: column;
            width: 100%;
            background: #0f2a3e;
            padding: 1rem 0.5rem;
            border-radius: 0 0 12px 12px;
            gap: 0.4rem;
        }
        #nav-toggle:checked~.main-nav a {
            width: 100%;
            text-align: left;
            padding: 0.6rem 1rem;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 0.6rem 1.2rem;
            border-radius: 40px;
            font-size: 0.9rem;
            display: inline-flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            margin: 1.2rem 0 0.8rem;
        }
        .breadcrumb a {
            color: #1d3557;
        }
        .breadcrumb a:hover {
            color: #e63946;
        }
        .breadcrumb span {
            color: #6c757d;
        }
        .hero-img {
            margin: 1.8rem 0 1.2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            background: #0b1a2a;
        }
        .hero-img img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .hero-caption {
            font-size: 0.9rem;
            color: #6c757d;
            text-align: center;
            margin-top: 0.3rem;
        }
        .interaction-section {
            background: #ffffff;
            border-radius: 18px;
            padding: 1.8rem 2rem;
            margin: 2.5rem 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e6ee;
        }
        .interaction-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .form-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-top: 1rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            flex: 1 1 200px;
            padding: 0.7rem 1rem;
            border: 2px solid #d2d6e0;
            border-radius: 10px;
            font-size: 1rem;
            background: #fafbfc;
            transition: border 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #e63946;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 80px;
            flex-basis: 100%;
        }
        .form-group button {
            background: #e63946;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .form-group button:hover {
            background: #b71c1c;
            transform: scale(1.02);
        }
        .score-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #f77f00;
            cursor: pointer;
        }
        .score-stars i:hover,
        .score-stars i.active {
            color: #e63946;
        }
        friend-link {
            display: block;
            background: #1d3557;
            color: #eaeef2;
            padding: 1.8rem 2rem;
            border-radius: 18px;
            margin: 2.5rem 0 1.5rem;
            font-style: normal;
        }
        friend-link a {
            color: #f77f00;
            font-weight: 500;
        }
        friend-link a:hover {
            color: #ffb703;
            text-decoration: underline;
        }
        friend-link h4 {
            color: #fff;
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .site-footer {
            background: #0b1a2a;
            color: #b0b8c8;
            padding: 2rem 1.2rem;
            text-align: center;
            border-radius: 24px 24px 0 0;
            margin-top: 3rem;
        }
        .site-footer p {
            margin-bottom: 0.4rem;
            font-size: 0.95rem;
        }
        .site-footer a {
            color: #f77f00;
        }
        .site-footer .copyright {
            font-size: 0.85rem;
            opacity: 0.8;
            margin-top: 0.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1rem;
        }
        @media (max-width: 800px) {
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
            }
            .main-nav a {
                font-size: 1rem;
                padding: 0.5rem 0.8rem;
            }
            .header-inner {
                position: relative;
            }
            #nav-toggle:checked~.hamburger {
                background: rgba(255, 255, 255, 0.08);
            }
            .interaction-section {
                padding: 1.2rem;
            }
            .form-group {
                flex-direction: column;
            }
            .form-group input,
            .form-group textarea {
                flex-basis: auto;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 0.4rem 0.8rem;
            }
            .hero-img img {
                max-height: 240px;
            }
            friend-link {
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.5rem;
            }
            .my-logo i {
                font-size: 1.3rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
                padding-left: 0.6rem;
            }
            .container {
                padding: 0 0.8rem;
            }
            .score-stars {
                font-size: 1.3rem;
            }
        }
        @media (min-width: 801px) {
            #nav-toggle {
                display: none !important;
            }
            .main-nav {
                display: flex !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .highlight {
            background: #fff3cd;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #e63946;
            color: #fff;
            font-size: 0.75rem;
            padding: 0.15rem 0.7rem;
            border-radius: 40px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0 1.8rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #1d3557;
            color: #fff;
            padding: 0.7rem 1rem;
            text-align: left;
        }
        .data-table td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid #e2e6ee;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #f8f9fc;
        }
        .tip-card {
            background: #e8f0fe;
            border-left: 6px solid #1d3557;
            padding: 1.2rem 1.6rem;
            border-radius: 12px;
            margin: 1.2rem 0;
        }
        .tip-card i {
            color: #1d3557;
            margin-right: 0.5rem;
        }
        .quote-block {
            font-style: italic;
            background: #f1f3f8;
            padding: 1.2rem 1.8rem;
            border-radius: 14px;
            border-left: 4px solid #e63946;
            margin: 1.2rem 0;
        }
        .quote-block cite {
            display: block;
            margin-top: 0.4rem;
            font-size: 0.9rem;
            color: #555;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.6rem;
            margin: 1.2rem 0;
        }
        @media (max-width: 600px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }