*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #0b0f1a;
            color: #e8edf5;
            line-height: 1.7;
            padding: 0;
            margin: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #7ec8f0;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus-visible {
            color: #b3e0ff;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #f0f4ff;
            letter-spacing: 0.01em;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.5rem;
            margin-bottom: 0.6rem;
            border-bottom: 2px solid rgba(126, 200, 240, 0.25);
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 2rem;
            margin-bottom: 0.5rem;
        }
        h4 {
            font-size: 1.15rem;
            margin-top: 1.5rem;
            margin-bottom: 0.3rem;
            color: #c8d8f0;
        }
        p {
            margin-bottom: 1.1rem;
            color: #d5ddee;
        }
        ul,
        ol {
            margin: 0.6rem 0 1.2rem 1.6rem;
            color: #d5ddee;
        }
        li {
            margin-bottom: 0.3rem;
        }
        strong {
            color: #f0f4ff;
            font-weight: 700;
        }
        em {
            color: #b0c8e8;
            font-style: italic;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }
        .site-header {
            background: #121824;
            border-bottom: 1px solid #1e2a3a;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f5d77b, #f2a65a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f5d77b;
            font-size: 1.4rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            flex-wrap: wrap;
            margin: 0;
        }
        .nav-list li a {
            display: block;
            padding: 0.5rem 0.9rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: #c8d8f0;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-list li a:hover,
        .nav-list li a:focus-visible {
            background: #1e2a3a;
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: #e8edf5;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #1e2a3a;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            padding: 0.8rem 0 0.2rem 0;
            font-size: 0.85rem;
            color: #8899b0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            list-style: none;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #556;
        }
        .breadcrumb a {
            color: #7ec8f0;
        }
        .breadcrumb a:hover {
            color: #b3e0ff;
        }
        .breadcrumb .current {
            color: #b0c8e8;
        }
        .hero {
            padding: 2rem 0 1.2rem 0;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            font-size: 0.9rem;
            color: #8899b0;
            margin-bottom: 1.2rem;
        }
        .hero-meta span i {
            margin-right: 0.4rem;
        }
        .hero-img-wrap {
            margin: 1.8rem 0 1.2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
            background: #1a2433;
            padding: 0.5rem;
        }
        .search-section {
            background: #121824;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            margin: 1.8rem 0;
            border: 1px solid #1e2a3a;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.8rem 1.2rem;
            border-radius: 10px;
            border: 1px solid #2a3a4a;
            background: #0b0f1a;
            color: #e8edf5;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #7ec8f0;
            box-shadow: 0 0 0 3px rgba(126, 200, 240, 0.2);
        }
        .search-form button {
            padding: 0.8rem 1.8rem;
            border-radius: 10px;
            border: none;
            background: linear-gradient(135deg, #f5d77b, #f2a65a);
            color: #0b0f1a;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.15s, box-shadow 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(242, 166, 90, 0.35);
        }
        .search-form button i {
            font-size: 1rem;
        }
        .tier-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .tier-table th,
        .tier-table td {
            padding: 0.9rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #1e2a3a;
            vertical-align: top;
        }
        .tier-table th {
            background: #1a2433;
            color: #f0f4ff;
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .tier-table td {
            background: #10171f;
        }
        .tier-table tr:last-child td {
            border-bottom: none;
        }
        .tier-badge {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 6px;
            font-weight: 800;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
        }
        .tier-s {
            background: #ff6b6b;
            color: #fff;
        }
        .tier-a {
            background: #f5a623;
            color: #1a1a2e;
        }
        .tier-b {
            background: #4ecdc4;
            color: #1a1a2e;
        }
        .tier-c {
            background: #6c5ce7;
            color: #fff;
        }
        .tier-d {
            background: #636e72;
            color: #fff;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2rem 0;
        }
        @media (max-width:720px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        .card {
            background: #121824;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            border: 1px solid #1e2a3a;
            transition: border-color 0.2s;
        }
        .card:hover {
            border-color: #2a3a4a;
        }
        .card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .card h3 i {
            color: #f5d77b;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #c8d8f0;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border-radius: 8px;
            border: 1px solid #2a3a4a;
            background: #0b0f1a;
            color: #e8edf5;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #7ec8f0;
            box-shadow: 0 0 0 3px rgba(126, 200, 240, 0.15);
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .btn-submit {
            padding: 0.7rem 2rem;
            border-radius: 10px;
            border: none;
            background: linear-gradient(135deg, #f5d77b, #f2a65a);
            color: #0b0f1a;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.15s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(242, 166, 90, 0.3);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 0.3rem;
            justify-content: flex-end;
            margin-top: 0.3rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #3a4a5a;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label i {
            pointer-events: none;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5d77b;
        }
        friend-link {
            display: block;
            background: #121824;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            margin: 2rem 0 1rem 0;
            border: 1px solid #1e2a3a;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        friend-link ul {
            list-style: none;
            margin: 0.8rem 0 0 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
        }
        friend-link ul li a {
            font-size: 0.95rem;
            padding: 0.2rem 0;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s;
        }
        friend-link ul li a:hover {
            border-bottom-color: #7ec8f0;
        }
        .site-footer {
            background: #0a0e16;
            border-top: 1px solid #1e2a3a;
            padding: 2rem 0 1.5rem 0;
            margin-top: auto;
            text-align: center;
            font-size: 0.9rem;
            color: #6a7a8a;
        }
        .site-footer .copyright {
            margin-top: 0.6rem;
            letter-spacing: 0.02em;
        }
        .site-footer a {
            color: #7ec8f0;
        }
        @media (max-width:820px) {
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #121824;
                border-radius: 12px;
                padding: 0.6rem 0;
                margin-top: 0.5rem;
                border: 1px solid #1e2a3a;
            }
            .nav-list li a {
                padding: 0.7rem 1.2rem;
                white-space: normal;
            }
            .hamburger {
                display: inline-block;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .tier-table th,
            .tier-table td {
                padding: 0.6rem 0.8rem;
                font-size: 0.85rem;
            }
            .hero-meta {
                flex-direction: column;
                gap: 0.3rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input[type="text"] {
                min-width: unset;
            }
        }
        @media (max-width:480px) {
            .container {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .card {
                padding: 1.2rem;
            }
            .search-section {
                padding: 1.2rem;
            }
            .tier-table {
                font-size: 0.8rem;
            }
            .tier-table th,
            .tier-table td {
                padding: 0.4rem 0.5rem;
            }
            .star-rating label {
                font-size: 1.4rem;
            }
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .text-glow {
            text-shadow: 0 0 12px rgba(245, 215, 123, 0.15);
        }
        .section-divider {
            height: 1px;
            background: linear-gradient(to right, transparent, #1e2a3a, transparent);
            margin: 2rem 0;
        }
        .reveal {
            opacity: 0;
            transform: translateY(18px);
            animation: revealUp 0.5s ease forwards;
        }
        @keyframes revealUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }