*,
        *::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;
            line-height: 1.8;
            color: #1e1e2a;
            background: #f8f9fc;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2a5c8a;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #c44536;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(145deg, #0f1a2e 0%, #1b2a45 100%);
            color: #fff;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #f6d365, #fda085);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: transform 0.25s ease;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo a {
            color: inherit;
            background: inherit;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            text-decoration: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e8edf5;
            font-weight: 500;
            padding: 0.4rem 0.8rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f6d365;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px 10px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 6px;
            border: none;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: #f6d365;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .breadcrumb {
            background: #eef1f7;
            padding: 0.7rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #dce1ec;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #7a7f8c;
        }
        .breadcrumb a {
            color: #2a5c8a;
        }
        .breadcrumb .current {
            color: #5a5f6b;
            font-weight: 500;
        }
        .hero-section {
            background: linear-gradient(135deg, #0f1a2e 0%, #1f3a5f 100%);
            color: #fff;
            padding: 3rem 0 2.5rem;
            text-align: center;
            position: relative;
        }
        .hero-section h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f6d365, #fda085);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.8rem;
            line-height: 1.2;
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 1.2rem;
            color: #d0d9e8;
            line-height: 1.6;
        }
        .hero-meta {
            font-size: 0.95rem;
            color: #aab4c9;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.2rem;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        section {
            margin-bottom: 2.8rem;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0f1a2e;
            margin-top: 1.2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #f6d365;
            line-height: 1.3;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1b2a45;
            margin-top: 1.6rem;
            margin-bottom: 0.8rem;
            line-height: 1.3;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2a4060;
            margin-top: 1.2rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.1rem;
            color: #2d2d3a;
        }
        .highlight-box {
            background: #eef3fb;
            border-left: 5px solid #f6d365;
            padding: 1.2rem 1.5rem;
            border-radius: 0 10px 10px 0;
            margin: 1.2rem 0;
        }
        .insight-box {
            background: #fff8e7;
            border: 1px solid #f0dbaa;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            margin: 1.2rem 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1rem;
            margin: 1.2rem 0;
        }
        .stat-card {
            background: #fff;
            border-radius: 12px;
            padding: 1.2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            text-align: center;
            border: 1px solid #e8ecf5;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #c44536;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: #5a5f6b;
            margin-top: 0.2rem;
        }
        .tier-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 0.8rem;
            margin: 1rem 0;
        }
        .tier-item {
            background: #fff;
            padding: 0.8rem 1rem;
            border-radius: 10px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            text-align: center;
            font-weight: 600;
            border: 1px solid #e0e5ef;
        }
        .tier-s {
            border-left: 4px solid #f6d365;
        }
        .tier-a {
            border-left: 4px solid #4caf50;
        }
        .tier-b {
            border-left: 4px solid #2196f3;
        }
        .tier-c {
            border-left: 4px solid #9e9e9e;
        }
        .feature-img {
            border-radius: 14px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.10);
            margin: 1.5rem auto;
            width: 100%;
            max-width: 820px;
        }
        .btn {
            display: inline-block;
            background: #2a5c8a;
            color: #fff;
            padding: 0.6rem 1.6rem;
            border-radius: 8px;
            font-weight: 600;
            transition: background 0.25s, transform 0.15s;
            border: none;
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn:hover {
            background: #c44536;
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1b2a45;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #ccd2df;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #2a5c8a;
            box-shadow: 0 0 0 3px rgba(42, 92, 138, 0.12);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-item {
            background: #fff;
            padding: 1rem 1.2rem;
            border-radius: 10px;
            margin-bottom: 0.8rem;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8ecf5;
        }
        .comment-item .meta {
            font-size: 0.85rem;
            color: #7a7f8c;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .comment-item .name {
            font-weight: 600;
            color: #1b2a45;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            cursor: pointer;
            color: #d0d5e0;
            transition: color 0.15s;
        }
        .star-rating .star.active {
            color: #f6b83d;
        }
        .star-rating .star:hover,
        .star-rating .star.hover {
            color: #f6b83d;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.4rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8ecf5;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 1rem;
            border-bottom: 2px solid #f6d365;
            padding-bottom: 0.4rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 0.6rem;
        }
        .sidebar-card a {
            font-weight: 500;
            display: inline-block;
            padding: 0.2rem 0;
        }
        .site-footer {
            background: #0f1a2e;
            color: #c8d0df;
            padding: 2rem 0 1.5rem;
            border-top: 3px solid #f6d365;
            margin-top: 2rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: start;
        }
        .site-footer a {
            color: #f6d365;
        }
        .site-footer a:hover {
            color: #fda085;
        }
        .site-footer .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 1.2rem;
            border-top: 1px solid #2a3a55;
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #8e98ae;
        }
        friend-link {
            display: block;
            background: #1b2a45;
            padding: 1rem 1.2rem;
            border-radius: 10px;
            margin: 0.5rem 0;
        }
        friend-link a {
            color: #f6d365;
            font-weight: 500;
            margin-right: 1.2rem;
            display: inline-block;
        }
        @media (max-width: 992px) {
            .content-wrap {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 0.8rem;
                gap: 0.3rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 0.8rem;
                border-radius: 6px;
                background: rgba(255, 255, 255, 0.05);
            }
            .header-inner {
                align-items: center;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-section p {
                font-size: 1rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tier-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .tier-list {
                grid-template-columns: 1fr;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        .text-muted {
            color: #6b7280;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .fw-bold {
            font-weight: 700;
        }