* { margin: 0; padding: 0; box-sizing: border-box; }

        :root {
            --primary-white: #FFFFFF;
            --primary-gold: #D4AF37;
            --primary-blue: #1B3A6D;
            --light-gold: #F5E6D3;
            --dark-blue: #0F2344;
            --text-dark: #333333;
            --text-light: #666666;
            --bg-light: #FAFAFA;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background: #FFFFFF;
            overflow-x: hidden;
        }

        html { scroll-behavior: smooth; }

        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 18px rgba(0,0,0,0.08);
            z-index: 1000;
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0.9rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-blue);
            text-decoration: none;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary-gold), var(--primary-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 1.2rem;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-dark);
            font-size: 0.96rem;
            font-weight: 500;
            position: relative;
            padding-bottom: 0.1rem;
            transition: color 0.2s ease;
        }

        .nav-menu a:hover {
            color: var(--primary-gold);
        }

        .nav-menu a.active {
            color: var(--primary-gold);
        }

        .nav-menu a.active::after,
        .nav-menu a:hover::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--primary-gold), var(--primary-blue));
        }

        .login-btn {
            padding: 0.5rem 1.4rem;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--primary-gold), #C9A047);
            color: #FFFFFF !important;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: 0 4px 18px rgba(212,175,55,0.4);
            transition: all 0.2s ease;
        }

        .login-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 7px 24px rgba(212,175,55,0.6);
        }

        /* Hero */
        .page-hero {
            margin-top: 78px;
            padding: 5rem 2rem 4rem;
            background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
              radial-gradient(circle at 15% 20%, rgba(212,175,55,0.22) 0, transparent 55%),
              radial-gradient(circle at 80% 80%, rgba(212,175,55,0.18) 0, transparent 55%);
        }

        .hero-inner {
            max-width: 1200px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
            gap: 3rem;
            align-items: center;
        }

        .hero-text h1 {
            color: #FFFFFF;
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }

        .hero-highlight {
            background: linear-gradient(135deg, var(--primary-gold), #F5E6D3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            color: var(--primary-gold);
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1.1rem;
        }

        .hero-text p {
            color: rgba(255,255,255,0.9);
            font-size: 1rem;
            max-width: 620px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
            margin-top: 1.5rem;
        }

        .hero-tag {
            padding: 0.25rem 0.8rem;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,0.45);
            color: rgba(255,255,255,0.9);
            font-size: 0.78rem;
            backdrop-filter: blur(6px);
        }

        .hero-actions {
            margin-top: 2rem;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn {
            padding: 0.85rem 2.3rem;
            border-radius: 999px;
            font-size: 0.98rem;
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-gold), #C9A047);
            color: #FFFFFF;
            box-shadow: 0 6px 25px rgba(212,175,55,0.5);
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 9px 30px rgba(212,175,55,0.7);
        }

        .btn-outline {
            background: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255,255,255,0.7);
        }

        .btn-outline:hover {
            background: #FFFFFF;
            color: var(--primary-blue);
        }

        .hero-card {
            background: rgba(15,35,68,0.9);
            border-radius: 22px;
            padding: 2rem;
            border: 1px solid rgba(212,175,55,0.4);
            box-shadow: 0 16px 60px rgba(0,0,0,0.45);
            color: #FFFFFF;
            max-width: 360px;
            justify-self: center;
        }

        .hero-card h3 {
            font-size: 1.1rem;
            color: var(--primary-gold);
            margin-bottom: 0.8rem;
        }

        .hero-card p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.85);
        }

        .hero-card-list {
            margin-top: 1rem;
            list-style: none;
            font-size: 0.9rem;
        }

        .hero-card-list li {
            margin-bottom: 0.4rem;
        }

        /* 通用 Section */
        .section {
            padding: 4.5rem 2rem;
        }

        .section-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-title {
            font-size: 2.3rem;
            font-weight: 800;
            color: var(--primary-blue);
            margin-bottom: 0.8rem;
            text-align: center;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 780px;
            margin: 0 auto 3rem;
            text-align: center;
        }

        /* 文档中心 */
        .docs-section {
            background: #FFFFFF;
        }

        .docs-grid {
            display: grid;
            grid-template-columns: minmax(0,1.1fr) minmax(0,1.1fr);
            gap: 2.5rem;
        }

        .docs-card {
            background: #FFFFFF;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 10px 32px rgba(0,0,0,0.06);
            border: 1px solid #F0F0F0;
        }

        .docs-label {
            font-size: 0.85rem;
            color: var(--primary-gold);
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 0.4rem;
        }

        .docs-card h3 {
            font-size: 1.3rem;
            color: var(--primary-blue);
            margin-bottom: 0.7rem;
        }

        .docs-card p {
            font-size: 0.94rem;
            color: var(--text-light);
            margin-bottom: 1rem;
        }

        .docs-list {
            list-style: none;
            font-size: 0.9rem;
        }

        .docs-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.65rem 0;
            border-bottom: 1px solid #F2F2F2;
        }

        .docs-item:last-child {
            border-bottom: none;
        }

        .docs-item span {
            color: var(--text-dark);
        }

        .docs-meta {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .link {
            font-size: 0.86rem;
            color: var(--primary-blue);
            text-decoration: none;
        }

        .link span {
            font-size: 0.8rem;
            margin-left: 0.2rem;
        }

        /* 开发者资源 */
        .dev-section {
            background: var(--bg-light);
        }

        .dev-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 2rem;
        }

        .dev-card {
            background: #FFFFFF;
            border-radius: 20px;
            padding: 1.9rem;
            box-shadow: 0 8px 26px rgba(0,0,0,0.05);
            border-top: 4px solid var(--primary-gold);
        }

        .dev-card h3 {
            font-size: 1.2rem;
            color: var(--primary-blue);
            margin-bottom: 0.6rem;
        }

        .dev-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0.8rem;
        }

        .dev-list {
            list-style: none;
            font-size: 0.88rem;
        }

        .dev-list li {
            margin-bottom: 0.4rem;
        }

        /* 媒体资料 */
        .media-section {
            background: #FFFFFF;
        }

        .media-grid {
            display: grid;
            grid-template-columns: minmax(0,1.1fr) minmax(0,1.1fr);
            gap: 2.5rem;
        }

        .media-card {
            background: #FFFFFF;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 9px 30px rgba(0,0,0,0.06);
            border: 1px solid #F0F0F0;
        }

        .media-card h3 {
            font-size: 1.25rem;
            color: var(--primary-blue);
            margin-bottom: 0.6rem;
        }

        .media-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0.9rem;
        }

        .media-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 0.5rem;
        }

        .media-tag {
            padding: 0.25rem 0.8rem;
            border-radius: 999px;
            background: #F5F7FB;
            font-size: 0.8rem;
            color: var(--primary-blue);
        }

        /* 下载区 */
        .download-section {
            background: var(--bg-light);
        }

        .download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.8rem;
        }

        .download-card {
            background: #FFFFFF;
            border-radius: 20px;
            padding: 1.7rem 1.9rem;
            box-shadow: 0 8px 26px rgba(0,0,0,0.05);
            border: 1px solid #F0F0F0;
        }

        .download-title {
            font-size: 1.05rem;
            color: var(--primary-blue);
            margin-bottom: 0.4rem;
        }

        .download-meta {
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: 0.8rem;
        }

        .download-actions {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.86rem;
        }

        .badge {
            padding: 0.2rem 0.6rem;
            border-radius: 999px;
            background: #F5F7FB;
            font-size: 0.78rem;
            color: var(--primary-blue);
        }

        /* 博客 & 公告 */
        .blog-section {
            background: #FFFFFF;
        }

        .blog-grid {
            display: grid;
            grid-template-columns: minmax(0,1.4fr) minmax(0,0.9fr);
            gap: 2.5rem;
        }

        .blog-list {
            list-style: none;
        }

        .blog-item {
            padding: 1.1rem 0;
            border-bottom: 1px solid #F0F0F0;
        }

        .blog-item:last-child {
            border-bottom: none;
        }

        .blog-title {
            font-size: 0.98rem;
            color: var(--primary-blue);
            margin-bottom: 0.3rem;
        }

        .blog-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 0.3rem;
        }

        .blog-excerpt {
            font-size: 0.88rem;
            color: var(--text-light);
        }

        .side-card {
            background: var(--bg-light);
            border-radius: 18px;
            padding: 1.6rem 1.8rem;
            border: 1px dashed #E0E0E0;
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .side-card h3 {
            font-size: 1rem;
            color: var(--primary-blue);
            margin-bottom: 0.6rem;
        }

        /* FAQ 简版 */
        .faq-section {
            background: var(--bg-light);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.6rem;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: 18px;
            padding: 1.4rem 1.5rem;
            border: 1px solid #EFEFEF;
            font-size: 0.9rem;
        }

        .faq-q {
            color: var(--primary-blue);
            font-weight: 600;
            margin-bottom: 0.4rem;
        }

        .faq-a {
            color: var(--text-light);
            font-size: 0.88rem;
        }

        /* CTA */
        .cta-section {
            background: #FFFFFF;
        }

        .cta-box {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-title {
            font-size: 2rem;
            color: var(--primary-blue);
            margin-bottom: 1rem;
            font-weight: 800;
        }

        .cta-text {
            font-size: 0.97rem;
            color: var(--text-light);
            margin-bottom: 2rem;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
            }
            .hero-card {
                margin-top: 1.5rem;
            }
            .docs-grid,
            .media-grid,
            .blog-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-container { padding: 0.8rem 1.2rem; }
            .nav-menu { display: none; } /* 如需移动端菜单，可自行扩展 */
            .page-hero { padding: 4rem 1.2rem 3rem; }
            .section { padding: 3.5rem 1.2rem; }
            .hero-text h1 { font-size: 2.2rem; }
            .section-title { font-size: 2rem; }
        }

        @media (max-width: 480px) {
            .hero-text h1 { font-size: 1.9rem; }
            .hero-subtitle { font-size: 1.02rem; }
        }

        /* 动画 */
        .fade {
            opacity: 0;
            transform: translateY(18px);
            transition: all 0.65s ease;
        }

        .fade.visible {
            opacity: 1;
            transform: translateY(0);
        }