/* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'PingFang SC', 'Helvetica Neue', Arial, 'Microsoft Yahei', sans-serif;
            -webkit-tap-highlight-color: transparent;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            color: #e2e8f0;
            line-height: 1.6;
            overflow-x: hidden;
            background-color: #020b14;
            touch-action: manipulation;
            /* 优化：只对容器背景做过渡，去除 color 过渡减负 CPU */
            transition: background-color 0.4s ease;
        }

        /* 全局独立分层，防止画布渲染阻碍 DOM 交互反馈 */
        #fish-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            pointer-events: none;
            transform: translateZ(0);
        }

        .hero-section,
        .section,
        footer {
            position: relative;
            transform: translateZ(0);
            contain: paint;
        }

        .logo-favicon-container,
        .cs-info-item,
        #cs-toggle-icon,
        .theme-toggle-btn {
            
        }

        .container {
            width: 85%;
            max-width: 1200px;
            margin: 0 auto;
        }

        #custom-fish-cursor {
            position: fixed;
            top: 0;
            left: 0;
            width: 32px;
            height: 32px;
            pointer-events: none;
            z-index: 9999;
            transform: translate(-50%, -50%);
            display: none !important;
        }

        /* ==================== 导航栏及标题栏 ==================== */
        header {
            background-color: rgba(2, 11, 20, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transform: translateZ(0);
            transition: background-color 0.4s ease, border-color 0.4s ease;
        }

        .scroll-progress-bar {
            position: absolute;
            bottom: -1px;
            left: 0;
            height: 3px;
            width: 0%;
            background: linear-gradient(90deg, #be2edd, #e056fd, #74b9ff);
            box-shadow: 0 0 10px rgba(224, 86, 253, 0.6);
            border-radius: 0 2px 2px 0;
            pointer-events: none;
            transition: width 0.1s ease-out;
            will-change: width;
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
        }

        .header-right {
            display: flex;
            align-items: center;
        }

        .logo-favicon-container {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            user-select: none;
        }

        .logo-text-mini {
            display: flex;
            flex-direction: column;
        }

        .logo-text-mini .brand-name {
            font-size: 19px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.5px;
        }

        @media (hover: hover) and (pointer: fine) {
            .logo-favicon-container:hover .brand-name {
            color: #e056fd;
        }
        }

        .logo-text-mini .brand-en {
            font-size: 9px;
            color: #708a9f;
            letter-spacing: 0.3px;
            font-weight: bold;
        }

        .nav-links {
            display: flex;
            list-style: none;
            align-items: center;
        }

        .nav-links li {
            margin-left: 35px;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 600;
            color: #94a3b8;
            text-decoration: none !important;
            padding: 6px 0;
            display: inline-block;
        }

        @media (hover: hover) and (pointer: fine) {
            .nav-links a:hover {
            color: #e056fd;
        }
        }

        .nav-links a.active {
            color: #ffffff;
        }

        /* 简洁主题切换入口 */
        .theme-toggle-btn {
            background: none;
            border: none;
            font-size: 20px;
            padding: 6px;
            margin-left: 35px;
            color: #94a3b8;
            display: flex;
            align-items: center;
            justify-content: center;
            outline: none;
            user-select: none;
            /* 仅保留 transform 的过渡 */
            transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        @media (hover: hover) and (pointer: fine) {
            .theme-toggle-btn:hover {
                color: #e056fd;
                transform: scale(1.15) rotate(15deg);
            }
        }

        /* ==================== 首屏 Banner ==================== */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding-top: 70px;
            box-sizing: border-box;
            text-align: center;
        }

        .hero-section .container {
            width: 100%;
        }

        .hero-section h1 {
            font-size: 52px;
            font-weight: 800;
            margin-bottom: 25px;
            letter-spacing: 2px;
            color: #ffffff;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
        }

        .hero-section p.hero-subtitle {
            font-size: 22px;
            color: #cbd5e1;
            margin-bottom: 45px;
        }

        .cta-group {
            display: flex;
            justify-content: center;
            gap: 20px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #e056fd, #be2edd);
            color: #fff;
            padding: 15px 45px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: bold;
            box-shadow: 0 6px 25px rgba(190, 46, 221, 0.3);
            transition: transform 0.2s ease;
            display: inline-block;
            text-decoration: none;
        }

        @media (hover: hover) and (pointer: fine) {
            .btn-primary:hover {
            transform: translateY(-2px);
        }
        }

        /* ==================== 通用板块布局 ==================== */
        .section {
            padding: 90px 0;
        }

        .section-title {
            text-align: center;
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 60px;
            color: #ffffff;
        }

        .about-box {
            background: rgba(4, 28, 49, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 45px;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background-color 0.4s ease, border-color 0.4s ease;
        }

        .about-text p {
            margin-bottom: 20px;
            color: #cbd5e1;
            text-indent: 2em;
            font-size: 16px;
            line-height: 1.9;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .service-card {
            background: rgba(4, 28, 49, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 40px 25px;
            border-radius: 12px;
            transition: transform 0.2s ease, background-color 0.4s ease, border-color 0.4s ease;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        @media (hover: hover) and (pointer: fine) {
            .service-card:hover {
            transform: translateY(-5px);
            background: rgba(4, 28, 49, 0.35);
            border-color: rgba(255, 255, 255, 0.2);
        }
        }

        .service-icon {
            font-size: 38px;
            margin-bottom: 20px;
            display: inline-block;
            color: #e056fd;
        }

        .service-card h3 {
            font-size: 19px;
            margin-bottom: 15px;
            color: #ffffff;
        }

        .service-card p {
            color: #94a3b8;
            font-size: 14px;
            line-height: 1.7;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .contact-item {
            text-align: center;
            background: rgba(4, 28, 49, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 35px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: background-color 0.4s ease, border-color 0.4s ease;
        }

        .contact-item h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: #ffffff;
        }

        .contact-item p {
            margin-top: 8px;
            font-weight: 500;
        }

        footer {
            background-color: #01060d;
            color: #94a3b8;
            padding: 45px 0;
            font-size: 14px;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            transition: background-color 0.4s ease, border-color 0.4s ease;
        }

        /* ==================== 备案与站点状态信息 ==================== */
        .footer-info-row {
            font-size: 12px;
            margin-top: 10px;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            color: #4b5563;
        }

        footer a {
            color: #b9c5ce;
            text-decoration: none;
            display: inline-block;
            padding: 2px 4px;
            font-size: 12px;
        }

        @media (hover: hover) and (pointer: fine) {
            footer a:hover {
            color: #e056fd;
            text-decoration: underline;
        }
        }

        .footer-sep {
            color: rgba(255, 255, 255, 0.35);
            user-select: none;
            font-size: 11px;
        }

        .ipv6-status, .http3-status {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 2px 4px;
            color: #94a3b8;
            font-size: 12px;
        }

        .ipv6-badge, .http3-badge {
            background: linear-gradient(135deg, #be2edd, #e056fd);
            color: #ffffff;
            font-size: 10px;
            font-weight: 800;
            padding: 1px 4px;
            border-radius: 3px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }

        /* ==================== 右下角客服入口 ==================== */
        .customer-service-container {
            position: fixed;
            right: 30px;
            bottom: 30px;
            z-index: 2100;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            opacity: 0;
            visibility: hidden;
            transition: opacity 1.5s ease-in-out, visibility 1.5s ease-in-out;
        }
        
        .customer-service-container.cs-visible {
            opacity: 1;
            visibility: visible;
        }

        @keyframes cs-breath {
            0% {
                box-shadow: 0 0 15px 4px rgba(224, 86, 253, 0.4);
            }
            50% {
                box-shadow: 0 0 25px 8px rgba(224, 86, 253, 0.6);
            }
            100% {
                box-shadow: 0 0 15px 4px rgba(224, 86, 253, 0.4);
            }
        }

        .cs-icon-button {
            touch-action: none;
            width: 46px;
            height: 46px;
            background: radial-gradient(circle at center, rgb(190, 46, 221) 0%, rgb(224, 86, 253) 75%, rgba(224, 86, 253, 0.75) 88%, rgba(224, 86, 253, 0.05) 100%);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            border: none;
            box-shadow: 0 0 15px 4px rgba(224, 86, 253, 0.4);
            transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            
            animation: cs-breath 2.5s infinite ease-in-out;
        }

        @media (hover: hover) and (pointer: fine) {
            .cs-icon-button:hover {
            transform: scale(1.08) rotate(5deg);
        }
        }

        /* 模态框遮罩 */
        .cs-modal-overlay {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s;
            cursor: default;
        }

        .customer-service-container.active .cs-modal-overlay {
            opacity: 1;
            visibility: visible;
        }

        
        .cs-popup-panel {
            position: fixed;
            top: 50%;
            left: 50%;
            background: rgba(10, 15, 26, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: 16px;
            width: 680px;
            max-width: 95vw;
            min-height: 420px;
            opacity: 0;
            visibility: hidden;
            transform: translate(-50%, -50%) scale(0);
            transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.7s;
            cursor: default;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(168, 85, 247, 0.2);
            padding: 0;
            border: none;
        }

        .cs-card-bg-wave-purple {
            position: absolute;
            bottom: -150px;
            right: -50px;
            width: 120%;
            height: 250px;
            background: linear-gradient(135deg, #a855f7, #7e22ce);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
            z-index: 1;
            transform: rotate(-5deg);
            pointer-events: none;
        }

        .cs-card-bg-wave-orange {
            position: absolute;
            bottom: -100px;
            left: -50px;
            width: 80%;
            height: 200px;
            background: linear-gradient(135deg, #f97316, #ef4444);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
            z-index: 0;
            transform: rotate(10deg);
            pointer-events: none;
        }

        .cs-card-large-fish {
            position: absolute;
            right: -30px;
            top: 15%;
            width: 250px;
            z-index: 2;
            transform: rotate(-15deg);
            pointer-events: none;
        }

        .cs-card-content {
            position: relative;
            z-index: 3;
            padding: 35px 40px;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-sizing: border-box;
        }

        .cs-brand-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 30px;
        }

        .cs-brand-logo {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .cs-brand-text {
            display: flex;
            flex-direction: column;
        }

        .cs-brand-title {
            font-size: 16px;
            font-weight: 800;
            color: #f8fafc;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .cs-brand-en {
            font-size: 9px;
            color: #94a3b8;
            font-weight: bold;
            letter-spacing: 0.5px;
        }

        .cs-slogan-section {
            margin-bottom: 25px;
        }

        .cs-main-heading {
            font-size: 26px;
            font-weight: 900;
            color: #ffffff;
            margin-bottom: 8px;
            letter-spacing: 1px;
        }

        .cs-sub-heading {
            font-size: 15px;
            color: #94a3b8;
            margin-bottom: 18px;
            font-weight: 500;
        }

        .cs-pill-badge {
            display: inline-block;
            background: linear-gradient(90deg, #a855f7, #d946ef);
            color: #fff;
            font-size: 12px;
            font-weight: bold;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 1px;
            box-shadow: 0 4px 10px rgba(168, 85, 247, 0.4);
        }

        .cs-contact-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 20px;
            max-width: 65%;
        }

        .cs-card-footer-row {
            display: flex;
            flex-direction: row;
            flex-wrap: nowrap;
            align-items: flex-end;
            justify-content: space-between;
            margin-top: auto;
            position: relative;
            z-index: 3;
            width: 100%;
            gap: 15px;
        }

        @keyframes rotateHalo {
            0% { transform: translate(-50%, -50%) rotate(0deg); }
            100% { transform: translate(-50%, -50%) rotate(360deg); }
        }

        

        

        

        .cs-qr-image-wrapper:hover,
        .cs-qr-image-wrapper:focus,
        .cs-qr-image-wrapper:active {
            box-shadow: 0 6px 20px rgba(224, 86, 253, 0.35);
            outline: none;
            
        }
        


        

        

        

        .cs-info-item {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(168, 85, 247, 0.2);
            color: #f8fafc;
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 14px;
            font-weight: 500;
            display: flex;
            align-items: center;
            transition: all 0.2s ease;
            
            position: relative;
            z-index: 10;
        }

        @media (hover: hover) and (pointer: fine) {
            .cs-info-item:hover {
                background: rgba(168, 85, 247, 0.15);
                border-color: rgba(168, 85, 247, 0.5);
                transform: translateY(-2px);
                box-shadow: 0 4px 12px rgba(168, 85, 247, 0.2);
            }
        }

        .cs-item-icon {
            margin-right: 8px;
            font-size: 15px;
            color: #d946ef;
            flex-shrink: 0;
        }

        .cs-text-content {
            margin-left: 2px;
            word-break: break-all;
        }

        .cs-copy-indicator {
            margin-left: auto;
            color: #64748b;
            opacity: 1; 
            transform: translateX(0);
            transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background-color: transparent;
        }

        @media (hover: hover) and (pointer: fine) {
            .cs-copy-indicator {
                opacity: 0;
                transform: translateX(-5px);
            }
            .cs-info-item:hover .cs-copy-indicator {
                opacity: 1;
                transform: translateX(0);
                color: #d946ef;
                background-color: rgba(217, 70, 239, 0.15);
            }
        }

        .cs-text-content.copied-highlight {
            color: #e056fd !important;
            text-shadow: 0 0 8px rgba(224, 86, 253, 0.5);
        }

        .cs-copy-indicator.copied-highlight {
            color: #10b981 !important;
            background-color: rgba(16, 185, 129, 0.2) !important;
            transform: scale(1.15) !important;
            opacity: 1 !important;
        }

        .cs-card-footer-url {
            display: inline-flex;
            align-self: flex-end;
            flex: 0 1 auto;
            margin-bottom: 2px; /* Slight optical adjustment */
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-left: 3px solid #ffffff;
            border-radius: 2px;
            font-size: 13px;
            color: #ffffff !important;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-decoration: none;
            z-index: 5;
            transition: all 0.25s ease;
        }

        @media (hover: hover) and (pointer: fine) {
            .cs-card-footer-url:hover {
                background: rgba(255, 255, 255, 0.15);
                border-color: rgba(255, 255, 255, 0.35);
                border-left-color: #e056fd;
                transform: translateX(4px);
                box-shadow: 4px 4px 15px rgba(0, 0, 0, 0.1);
            }
        }

        .cs-close-btn {
            position: absolute;
            top: 14px;
            right: 16px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: none;
            color: #cbd5e1;
            font-size: 24px;
            
            line-height: 1;
            transition: all 0.2s ease;
            z-index: 10;
        }

        @media (hover: hover) and (pointer: fine) {
            .cs-close-btn:hover {
                color: #f87171;
                background: rgba(255, 255, 255, 0.2);
            }
        }

        .customer-service-container.active .cs-popup-panel {
            opacity: 1;
            visibility: visible;
            transform: translate(-50%, -50%) scale(1);
        }

        /* ==================== 🌞 浅色主题 (Light Theme) 覆盖样式 ==================== */
        body[data-theme="light"] {
            background-color: #eff6ff;
            color: #0f172a;
        }

        body[data-theme="light"] header {
            background-color: rgba(255, 255, 255, 0.92);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            box-shadow: 0 4px 30px rgba(37, 99, 235, 0.08);
        }

        body[data-theme="light"] .logo-text-mini .brand-name {
            color: #0f172a;
        }

        @media (hover: hover) and (pointer: fine) {
    body[data-theme="light"] .logo-favicon-container:hover .brand-name {
            color: #e056fd;
        }
}

        body[data-theme="light"] .nav-links a {
            color: #475569;
        }

        @media (hover: hover) and (pointer: fine) {
    body[data-theme="light"] .nav-links a:hover {
            color: #e056fd;
        }
}

        body[data-theme="light"] .nav-links a.active {
            color: #0f172a;
        }

        body[data-theme="light"] .theme-toggle-btn {
            color: #475569;
        }

        @media (hover: hover) and (pointer: fine) {
            body[data-theme="light"] .theme-toggle-btn:hover {
                color: #e056fd;
            }
        }

        body[data-theme="light"] .hero-section h1 {
            color: #0f172a;
            /* 性能优化：降低模糊半径，极大地减轻 GPU 合成压力 */
            text-shadow: 0 2px 10px rgba(255, 255, 255, 0.9);
        }

        body[data-theme="light"] .hero-section p.hero-subtitle {
            color: #475569;
            font-weight: 500;
        }

        body[data-theme="light"] .section-title {
            color: #0f172a;
        }

        body[data-theme="light"] .about-box {
            background: rgba(255, 255, 255, 0.45);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(37, 99, 235, 0.2);
            box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.1);
        }

        body[data-theme="light"] .about-text p {
            color: #1e293b;
        }

        body[data-theme="light"] .service-card {
            background: rgba(255, 255, 255, 0.45);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(37, 99, 235, 0.15);
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.05);
        }

        body[data-theme="light"] .service-icon {
            color: #be2edd;
        }

        @media (hover: hover) and (pointer: fine) {
    body[data-theme="light"] .service-card:hover {
            background: rgba(255, 255, 255, 0.65);
            border-color: rgba(190, 46, 221, 0.6);
            box-shadow: 0 10px 25px -5px rgba(190, 46, 221, 0.15);
        }
}

        body[data-theme="light"] .service-card h3 {
            color: #0f172a;
        }

        body[data-theme="light"] .service-card p {
            color: #475569;
        }

        body[data-theme="light"] .contact-item {
            background: rgba(255, 255, 255, 0.45);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(37, 99, 235, 0.15);
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.05);
        }

        body[data-theme="light"] .contact-item h3 {
            color: #0f172a;
        }

        body[data-theme="light"] .contact-item p {
            color: #475569;
            font-weight: 500;
        }

        body[data-theme="light"] footer {
            background-color: #ffffff;
            color: #475569;
            border-top: 1px solid rgba(37, 99, 235, 0.15);
        }

        body[data-theme="light"] footer a {
            color: #475569;
            font-size: 12px;
        }

        @media (hover: hover) and (pointer: fine) {
    body[data-theme="light"] footer a:hover {
            color: #e056fd;
            text-decoration: underline;
        }
}

        body[data-theme="light"] .footer-sep {
            color: rgba(37, 99, 235, 0.4);
        }

        body[data-theme="light"] .ipv6-status, body[data-theme="light"] .http3-status {
            color: #475569;
        }


        body[data-theme="light"] .cs-popup-panel {
            background: #ffffff;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            border: 1px solid rgba(224, 86, 253, 0.25);
        }
        body[data-theme="light"] .cs-brand-title {
            color: #1e293b;
        }
        body[data-theme="light"] .cs-brand-en {
            color: #64748b;
        }
        body[data-theme="light"] .cs-main-heading {
            color: #0f172a;
        }
        body[data-theme="light"] .cs-sub-heading {
            color: #475569;
        }
        body[data-theme="light"] .cs-info-item {
            background: rgba(243, 232, 255, 0.4);
            color: #1e293b;
            border-color: rgba(168, 85, 247, 0.3);
        }
        @media (hover: hover) and (pointer: fine) {
            body[data-theme="light"] .cs-info-item:hover {
                background: rgba(243, 232, 255, 0.95);
                border-color: rgba(168, 85, 247, 0.4);
                box-shadow: 0 4px 12px rgba(168, 85, 247, 0.15);
            }
            body[data-theme="light"] .cs-close-btn:hover {
                background: rgba(255, 255, 255, 0.9);
                color: #ef4444;
            }
        }
        body[data-theme="light"] .cs-close-btn {
            background: rgba(255, 255, 255, 0.5);
            color: #64748b;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .contact-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 600px) {
            .services-grid {
                grid-template-columns: 1fr;
            }

            .nav-links {
                display: none;
            }

            .theme-toggle-btn {
                margin-left: auto;
                padding-right: 15px;
            }

            .hero-section h1 {
                font-size: 32px;
            }
        }

        /* ==================== 页面加载动画 ==================== */
        .page-loader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #020b14;
            z-index: 99999;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: opacity 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
        }

        .page-loader.loaded {
            opacity: 0;
            pointer-events: none;
        }

        .loader-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .taiji-loader {
            width: 105px;
            height: 105px;
            margin-bottom: 25px;
            position: relative;
            background: transparent;
            /* 科技感呼吸：使用 cubic-bezier 让动画节奏更干脆 */
            animation: taijiBreathe 2s cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
        }

        .taiji-fish-svg {
            width: 100%;
            height: 100%;
            transform-origin: center center;
            /* 直接使用 CSS drop-shadow 滤镜产生光晕，完美贴合鱼的形状，杜绝任何实体圆环 */
            /* 配合科技感稍加快转速 */
            animation: taijiSpin 3s linear infinite;
        }

        @keyframes taijiBreathe {
            0% {
                transform: scale(0.85);
            }
            100% {
                transform: scale(1.15);
            }
        }

        @keyframes taijiSpin {
            0% {
                transform: rotate(0deg);
            }
            100% {
                transform: rotate(360deg);
            }
        }

        .loader-text {
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 4px;
            color: #e2e8f0;
            text-indent: 4px;
            text-shadow: 0 0 12px rgba(224, 86, 253, 0.4);
            /* 与太极图保持相同的动画时长(2s)和节奏(cubic-bezier)实现完美同步 */
            animation: textPulse 2s cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
        }

        @keyframes textPulse {
            0% {
                opacity: 0.65;
                transform: scale(0.9);
            }
            100% {
                opacity: 1;
                transform: scale(1.1);
            }
        }

        /* 适配浅色主题加载背景 */
        body[data-theme="light"] .page-loader {
            background-color: #eff6ff;
        }

        body[data-theme="light"] .taiji-fish-svg {
        }

        body[data-theme="light"] .loader-text {
            color: #1e293b;
            text-shadow: 0 0 10px rgba(37, 99, 235, 0.2);
        }

/* SVG Icon masking styles */
.icon-svg {
    display: inline-block;
    width: 18px;
    height: 18px;
    background-color: currentColor;
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
}

.icon-copy {
    -webkit-mask-image: url('../svg/copy-icon.svg');
    mask-image: url('../svg/copy-icon.svg');
}

.icon-check {
    -webkit-mask-image: url('../svg/check-icon.svg');
    mask-image: url('../svg/check-icon.svg');
}

@media (max-width: 600px) {
    .cs-popup-panel {
        min-height: auto;
    }
    .cs-card-content {
        padding: 25px 20px;
    }
    .cs-brand-header {
        margin-bottom: 20px;
    }
    .cs-slogan-section {
        margin-bottom: 20px;
    }
    .cs-main-heading {
        font-size: 20px;
    }
    .cs-sub-heading {
        font-size: 13px;
        margin-bottom: 12px;
    }
    .cs-contact-list {
        max-width: 100%;
        width: 100%;
        margin-bottom: 15px;
    }
    .cs-card-footer-row {
        align-items: flex-end;
    }
    
    
    .cs-info-item {
        padding: 8px 10px;
    }
    .cs-card-large-fish {
        width: 140px;
        right: -10px;
        top: 10%;
        opacity: 0.9;
    }
}

/* ==================== 404 错误页面 ==================== */
.not-found-section {
    min-height: calc(100vh - 150px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 60px;
    text-align: center;
    position: relative;
    z-index: 2;
}


.not-found-title {
    font-size: 140px;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #9852f9 0%, #e056fd 50%, #ffae5b 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.not-found-subtitle {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #a855f7 0%, #e056fd 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.not-found-text {
    font-size: 16px;
    color: #cbd5e1;
    max-width: 450px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

body[data-theme="light"] .not-found-title {
}

body[data-theme="light"] .not-found-subtitle {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #a855f7 0%, #e056fd 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

body[data-theme="light"] .not-found-text {
    color: #475569;
}

@media (max-width: 600px) {
    .not-found-title { font-size: 100px; }
    .not-found-subtitle { font-size: 22px; }
}

main { flex: 1 0 auto; }
footer { flex-shrink: 0; }

.accessibility-status {
    display: inline-flex;
    align-items: center;
    color: #94a3b8;
    
    transition: color 0.3s ease;
    background: none;
    border: none;
    padding: 0;
    font: inherit;
}
.accessibility-status:hover {
    color: #e056fd;
}
body[data-theme="light"] .accessibility-status {
    color: #475569;
}
body[data-theme="light"] .accessibility-status:hover {
    color: #e056fd;
}

.a11y-icon {
    display: inline-block;
    width: 18px;
    height: 18px;
    background-color: currentColor;
    -webkit-mask: url('../svg/accessibility.svg') no-repeat center / contain;
    mask: url('../svg/accessibility.svg') no-repeat center / contain;
}

@media (max-width: 768px) {
    .customer-service-container {
        bottom: 80px;
        right: 20px;
    }
}
.cs-icon-button {
            touch-action: none;
    cursor: grab;
}
.cs-icon-button:active {
    cursor: grabbing;
}

/* QR Code Base */
.cs-qr-image-wrapper {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    z-index: 10;
    flex-shrink: 0;
    overflow: hidden;
}

body[data-theme="light"] .cs-qr-image-wrapper {
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.2);
}

.cs-qr-image-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 250%;
    height: 250%;
    background: conic-gradient(from 0deg, transparent 40%, #e056fd 60%, #a855f7 80%, #ffae5b 100%);
    animation: rotateHalo 3s linear infinite;
    z-index: 1;
}

.cs-qr-inner {
    position: relative;
    z-index: 2;
    width: calc(100% - 3px);
    height: calc(100% - 3px);
    background: #ffffff;
    border-radius: 6.5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cs-qr-image {
    width: calc(100% - 6px);
    height: calc(100% - 6px);
    object-fit: contain;
    display: block;
}

@media (max-width: 600px) {
    .cs-qr-image-wrapper {
        width: 48px;
        height: 48px;
    }
}