* {
            font-family: 'Noto Sans SC', sans-serif;
        }
        
        body {
            overflow-x: hidden;
            background: #0a0a0a;
        }
        
        .gradient-text {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .glass-card {
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .glow-border {
            position: relative;
        }
        
        .glow-border::before {
            content: '';
            position: absolute;
            inset: -2px;
            background: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #667eea);
            border-radius: inherit;
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        .glow-border:hover::before {
            opacity: 1;
        }
        
        .particle {
            position: absolute;
            width: 4px;
            height: 4px;
            background: rgba(102, 126, 234, 0.6);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .timeline-line {
            background: linear-gradient(to bottom, #667eea, #764ba2, #f093fb);
        }
        
        .progress-ring {
            transform: rotate(-90deg);
        }
        
        .progress-ring-circle {
            transition: stroke-dashoffset 1s ease-in-out;
        }
        
        .nav-dot {
            transition: all 0.3s;
        }
        
        .nav-dot.active {
            background: linear-gradient(135deg, #667eea, #764ba2);
            transform: scale(1.5);
        }
        
        html {
            scroll-behavior: auto;
            overflow-x: hidden;
            overflow-y: auto;
        }

        body {
            overflow-x: hidden;
            overflow-y: visible;
        }
        
        .section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 60px 0;
        }
        
        /* 架构页：单视口一屏展示（内容压缩 + 详情改浮层） */
        .section.section-architecture {
            align-items: center;
            justify-content: center;
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
        }
        
        .section.section-architecture.architecture-onepage {
            max-height: 100vh;
            min-height: 100vh;
            overflow: hidden;
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
        }
        
        .architecture-onepage-inner {
            display: flex;
            flex-direction: column;
            width: 100%;
            max-height: min(100vh - 1rem, 900px);
            min-height: 0;
        }
        
        .architecture-onepage-scroll {
            flex: 1;
            min-height: 0;
            overflow-y: auto;
            overscroll-behavior: contain;
        }
        
        .floating {
            animation: float 6s ease-in-out infinite;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
        }
        
        .pulse-glow {
            animation: pulseGlow 2s ease-in-out infinite;
        }
        
        @keyframes pulseGlow {
            0%, 100% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.3); }
            50% { box-shadow: 0 0 40px rgba(102, 126, 234, 0.6); }
        }
        
        .typewriter {
            overflow: hidden;
            border-right: 3px solid #667eea;
            white-space: nowrap;
            animation: typing 3s steps(40, end), blink-caret 0.75s step-end infinite;
        }
        
        @keyframes typing {
            from { width: 0 }
            to { width: 100% }
        }
        
        @keyframes blink-caret {
            from, to { border-color: transparent }
            50% { border-color: #667eea }
        }
        
        .card-hover {
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .card-hover:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 30px 60px rgba(102, 126, 234, 0.3);
        }
        
        .expandable-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease-out;
        }
        
        .expandable-content.expanded {
            max-height: 1000px;
        }
        
        .tab-active {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
        }
        
        .counter {
            font-variant-numeric: tabular-nums;
        }
        
        .orbit {
            animation: orbit 20s linear infinite;
        }
        
        @keyframes orbit {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }
        
        .orbit-reverse {
            animation: orbit 20s linear infinite reverse;
        }
        
        .scene-card {
            opacity: 0;
            transform: translateY(50px);
        }
        
        .metric-bar {
            width: 0;
            transition: width 1.5s ease-out;
        }
        
        .architecture-node {
            cursor: pointer;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, filter 0.25s ease;
        }
        
        .architecture-node:hover {
            transform: translateY(-4px);
            filter: brightness(1.08);
        }
        
        .architecture-node.active {
            transform: translateY(-2px);
            filter: brightness(1.12);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.28), 0 12px 40px rgba(102, 126, 234, 0.35);
        }
        
        .data-tooltip {
            position: relative;
            cursor: help;
        }
        
        .data-tooltip:hover .tooltip-content {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .tooltip-content {
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            background: rgba(15, 23, 42, 0.95);
            border: 1px solid rgba(102, 126, 234, 0.5);
            border-radius: 12px;
            padding: 12px 16px;
            min-width: 280px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 100;
            backdrop-filter: blur(10px);
        }
        
        .tooltip-content::after {
            content: '';
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%);
            border: 8px solid transparent;
            border-top-color: rgba(102, 126, 234, 0.5);
        }
        
        .data-source-link {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 100;
            cursor: pointer;
        }
        
        .confidence-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 500;
        }
        
        .confidence-high {
            background: rgba(16, 185, 129, 0.2);
            color: #10b981;
            border: 1px solid rgba(16, 185, 129, 0.3);
        }
        
        .confidence-medium {
            background: rgba(245, 158, 11, 0.2);
            color: #f59e0b;
            border: 1px solid rgba(245, 158, 11, 0.3);
        }
        
        /* 弹窗样式 */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            z-index: 200;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }
        
        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .modal-content {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(30, 41, 59, 0.98));
            border: 1px solid rgba(102, 126, 234, 0.3);
            border-radius: 24px;
            padding: 32px;
            max-width: 800px;
            width: 90%;
            max-height: 85vh;
            overflow-y: auto;
            transform: translateY(30px) scale(0.95);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(102, 126, 234, 0.1);
        }
        
        .modal-overlay.active .modal-content {
            transform: translateY(0) scale(1);
        }
        
        .modal-content::-webkit-scrollbar {
            width: 6px;
        }
        
        .modal-content::-webkit-scrollbar-track {
            background: transparent;
        }
        
        .modal-content::-webkit-scrollbar-thumb {
            background: rgba(102, 126, 234, 0.3);
            border-radius: 3px;
        }
        
        /* 数据来源弹窗：大尺寸 + 可读字号，必要时整块纵向滚动 */
        #source-modal .modal-content.source-modal-fit {
            max-width: min(1240px, 98vw);
            width: 96%;
            max-height: min(92vh, 1020px);
            padding: 22px 26px 20px;
            overflow-x: hidden;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            border-radius: 20px;
        }
        
        #source-modal .source-modal-fit-header {
            flex-shrink: 0;
        }
        
        #source-modal .source-modal-metrics-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            grid-auto-rows: auto;
            gap: 14px 16px;
            margin-top: 4px;
            margin-bottom: 6px;
            align-content: start;
        }
        
        @media (max-width: 720px) {
            #source-modal .source-modal-metrics-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }
        
        @media (max-height: 700px) {
            #source-modal .modal-content.source-modal-fit {
                max-height: 96vh;
            }
        }
        
        #source-modal .source-modal-metric-card {
            padding: 14px 16px;
            border-radius: 14px;
            display: flex;
            flex-direction: column;
            min-height: 0;
            overflow: visible;
        }
        
        #source-modal .source-modal-metric-card .metric-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }
        
        #source-modal .source-modal-metric-card .metric-pct {
            font-size: clamp(1.5rem, 2.4vw, 1.85rem);
            font-weight: 800;
            line-height: 1;
            flex-shrink: 0;
        }
        
        #source-modal .source-modal-metric-card .metric-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            line-height: 1.35;
        }
        
        #source-modal .source-modal-metric-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.8125rem;
            line-height: 1.5;
            color: #cbd5e1;
        }
        
        #source-modal .source-modal-metric-card ul li {
            padding-left: 0.75em;
            text-indent: -0.75em;
        }
        
        #source-modal .source-modal-metric-card ul li + li {
            margin-top: 6px;
        }
        
        #source-modal .source-modal-metric-card .confidence-badge {
            font-size: 0.6875rem;
            padding: 3px 8px;
            margin-top: 4px;
        }
        
        #source-modal .source-modal-metric-card .metric-foot {
            font-size: 0.75rem;
            line-height: 1.45;
            margin-top: auto;
            padding-top: 10px;
        }
        
        #source-modal .source-modal-footer-block {
            flex-shrink: 0;
        }