/* ==========================================
           CSS Variables - Ocean Mint Green Theme
           ========================================== */
        :root {
            /* === 核心綠色系：森林學術綠，取代水療薄荷 === */
            --primary-green:  oklch(0.30 0.10 148);   /* 深森林：標題、邊框、深色文字 */
            --accent-green:   oklch(0.50 0.13 148);   /* 中性森林：互動元素、連結 */
            --bg-tint:        oklch(0.97 0.015 148);  /* 微綠底色：替代純白 */
            --text-dark:      oklch(0.20 0.08 148);   /* 深森林文字 */
            --text-mid:       oklch(0.42 0.09 148);   /* 中等綠文字 */

            /* === 琥珀金：學術典藏輔色，取代紫色 === */
            --amber:          oklch(0.70 0.13 72);    /* 主琥珀：重要強調 */
            --amber-deep:     oklch(0.52 0.15 68);    /* 深琥珀：hover 狀態 */

            /* === 舊變數重導向（向下相容） === */
            --primary-teal:   var(--primary-green);
            --accent-teal:    var(--accent-green);
            --bg-mint:        var(--bg-tint);
            --purple-accent:  var(--amber);            /* 砍掉紫色，自動重導琥珀 */
            --orange-accent:  var(--amber-deep);
        }


        /* ==========================================
           Mesh Gradient Animation Background (極光背景)
           ========================================== */
        body {
            background: linear-gradient(135deg,
                    #F1F5F4,
                    #F6F8F7);
            background-size: 400% 400%;
            animation: mesh-gradient 20s ease infinite;
            color: var(--text-dark);
            font-family: 'Noto Sans TC', sans-serif;
            overflow-x: hidden;
            font-size: 1.0625rem;  /* 17px：中文正文基底 */
            line-height: 1.8;
        }

        @keyframes mesh-gradient {
            0% {
                background-position: 0% 50%;
            }

            25% {
                background-position: 50% 80%;
            }

            50% {
                background-position: 100% 50%;
            }

            75% {
                background-position: 50% 20%;
            }

            100% {
                background-position: 0% 50%;
            }
        }

        /* ==========================================
           Typography Strategy - Serif for Headers
           ========================================== */
        h1,
        h2,
        .section-title {
            font-family: 'Noto Serif TC', serif;
            font-weight: 700;
        }

        /* ==========================================
           Hero Section - Glass Cards & Count-Up
           ========================================== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 120px 0 0;
            background: transparent;
        }

        /* Hero section 內的 waterfall 定位 */
        .hero-section .waterfall-svg-container {
            margin-top: auto;
        }

        /* Enhanced Glass Morphism with Top Highlight */
        .glass-card {
            background: var(--glass-white);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            border: 1px solid var(--glass-border);
            border-top: 2px solid rgba(255, 255, 255, 0.9);
            border-radius: 24px;
            box-shadow:
                0 8px 32px rgba(38, 166, 154, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.7);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .glass-card:hover {
            transform: translateY(-8px) scale(1.02);
            box-shadow:
                0 20px 60px rgba(38, 166, 154, 0.25),
                inset 0 1px 0 rgba(255, 255, 255, 0.9);
        }

        /* Tighter Letter-Spacing for Numbers */
        .count-number {
            font-size: 3.5rem;
            font-weight: 700;
            color: var(--primary-teal);
            line-height: 1;
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.05em;
            transition: transform 0.3s ease;
        }

        .count-number.pop {
            animation: count-pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        @keyframes count-pop {
            0% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.15);
            }

            100% {
                transform: scale(1);
            }
        }

        @media (max-width: 768px) {
            .count-number {
                font-size: 2.5rem;
            }
        }

        /* ==========================================
           全頁電路樹系統 (Circuit Tree System)
           從 Hero 的數據卡片 → Business 的中心 Logo → Milestones
           ========================================== */

        /* 電路樹 SVG 容器 - 固定在頁面中央 */
        .circuit-tree-container {
            position: fixed;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            max-width: 1200px;
            height: 100vh;
            pointer-events: none;
            z-index: 5;
            opacity: 0;
            transition: opacity 0.5s ease;
        }

        body.exhibition-mode .circuit-tree-container {
            opacity: 1;
        }

        /* 也可以在一般模式下顯示（較淡） */
        .circuit-tree-container.always-visible {
            opacity: 0.6;
        }

        /* 電路樹基礎線條 */
        .circuit-tree-line {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 1.5;
            stroke-linecap: round;
            stroke-linejoin: round;
            opacity: 0.08;
        }

        /* 電路樹霓虹流動效果 */
        .circuit-tree-flow {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            opacity: 0;
            filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.8)) drop-shadow(0 0 8px rgba(38, 166, 154, 0.5));
            stroke-dasharray: 30 800;
        }

        /* Hero 區域的分支流動 */
        .circuit-tree-flow.hero-branch {
            animation: circuit-flow-down 3s ease-in-out infinite;
        }

        .circuit-tree-flow.hero-branch:nth-child(2) {
            animation-delay: 0.3s;
        }

        .circuit-tree-flow.hero-branch:nth-child(3) {
            animation-delay: 0.6s;
        }

        .circuit-tree-flow.hero-branch:nth-child(4) {
            animation-delay: 0.9s;
        }

        /* 主幹流動 */
        .circuit-tree-flow.main-trunk {
            stroke-dasharray: 50 1500;
            animation: circuit-flow-trunk 4s ease-in-out infinite;
        }

        @keyframes circuit-flow-down {
            0% {
                stroke-dashoffset: 30;
                opacity: 0;
            }

            10% {
                opacity: 0.9;
            }

            90% {
                opacity: 0.9;
            }

            100% {
                stroke-dashoffset: -300;
                opacity: 0;
            }
        }

        @keyframes circuit-flow-trunk {
            0% {
                stroke-dashoffset: 50;
                opacity: 0;
            }

            5% {
                opacity: 0.9;
            }

            95% {
                opacity: 0.9;
            }

            100% {
                stroke-dashoffset: -1500;
                opacity: 0;
            }
        }

        /* 電路樹節點 */
        .circuit-tree-node {
            fill: var(--accent-teal);
            opacity: 0.3;
        }

        .circuit-tree-node-glow {
            fill: var(--accent-teal);
            opacity: 0;
            filter: drop-shadow(0 0 6px rgba(38, 166, 154, 0.9)) drop-shadow(0 0 12px rgba(38, 166, 154, 0.5));
        }

        /* 節點依序亮起 */
        .circuit-tree-node-glow.node-hero-1 {
            animation: tree-node-activate 3s ease-in-out infinite;
            animation-delay: 0.2s;
        }

        .circuit-tree-node-glow.node-hero-2 {
            animation: tree-node-activate 3s ease-in-out infinite;
            animation-delay: 0.5s;
        }

        .circuit-tree-node-glow.node-hero-3 {
            animation: tree-node-activate 3s ease-in-out infinite;
            animation-delay: 0.8s;
        }

        .circuit-tree-node-glow.node-hero-4 {
            animation: tree-node-activate 3s ease-in-out infinite;
            animation-delay: 1.1s;
        }

        .circuit-tree-node-glow.node-merge {
            animation: tree-node-activate 3s ease-in-out infinite;
            animation-delay: 1.5s;
        }

        .circuit-tree-node-glow.node-core {
            animation: core-node-glow 2s ease-in-out infinite;
            filter: drop-shadow(0 0 10px rgba(38, 166, 154, 1)) drop-shadow(0 0 20px rgba(38, 166, 154, 0.7));
        }

        @keyframes tree-node-activate {

            0%,
            20% {
                opacity: 0;
            }

            30% {
                opacity: 1;
            }

            70% {
                opacity: 0.8;
            }

            100% {
                opacity: 0;
            }
        }

        @keyframes core-node-glow {

            0%,
            100% {
                opacity: 0.6;
            }

            50% {
                opacity: 1;
            }
        }

        /* ==========================================
           Hero -> Business 連接區域（PCB 風格 J）
           ========================================== */
        .hero-business-connector {
            position: relative;
            width: 100%;
            height: 280px;
            pointer-events: none;
            z-index: 5;
            margin-top: 40px;
        }

        .hero-business-connector svg {
            width: 100%;
            height: 100%;
        }

        /* （已移除 Business -> Milestones 連接線，改由里程碑電路圖向上延伸處理） */

        /* ==========================================
           PCB 連接線樣式（風格 J）
           ========================================== */
        .pcb-connector-line {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 1.5;
            stroke-linecap: round;
            stroke-linejoin: round;
            opacity: 0.2;
        }

        .pcb-connector-glow {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            opacity: 0;
            filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.8)) drop-shadow(0 0 8px rgba(38, 166, 154, 0.5));
        }

        /* 主幹流動動畫 */
        .pcb-connector-glow.trunk {
            stroke-dasharray: 60 500;
            animation: pcb-flow-trunk 3.5s ease-in-out infinite;
        }

        /* 分支流動動畫 */
        .pcb-connector-glow.branch {
            stroke-dasharray: 25 300;
            animation: pcb-flow-branch 2.8s ease-in-out infinite;
        }

        .pcb-connector-glow.branch.b1 {
            animation-delay: 0.3s;
        }

        .pcb-connector-glow.branch.b2 {
            animation-delay: 0.6s;
        }

        .pcb-connector-glow.branch.b3 {
            animation-delay: 0.9s;
        }

        .pcb-connector-glow.branch.b4 {
            animation-delay: 1.2s;
        }

        @keyframes pcb-flow-trunk {
            0% {
                stroke-dashoffset: 60;
                opacity: 0;
            }

            5% {
                opacity: 0.9;
            }

            95% {
                opacity: 0.9;
            }

            100% {
                stroke-dashoffset: -500;
                opacity: 0;
            }
        }

        @keyframes pcb-flow-branch {
            0% {
                stroke-dashoffset: 25;
                opacity: 0;
            }

            15% {
                opacity: 0.9;
            }

            85% {
                opacity: 0.9;
            }

            100% {
                stroke-dashoffset: -300;
                opacity: 0;
            }
        }

        /* PCB 連接節點 */
        .pcb-connector-node {
            fill: var(--accent-teal);
            opacity: 0.3;
        }

        .pcb-connector-node-glow {
            fill: var(--accent-teal);
            opacity: 0;
            filter: drop-shadow(0 0 6px rgba(38, 166, 154, 0.9)) drop-shadow(0 0 12px rgba(38, 166, 154, 0.5));
            animation: pcb-node-breathe 2.8s ease-in-out infinite;
        }

        .pcb-connector-node-glow.source {
            animation-delay: 0s;
        }

        .pcb-connector-node-glow.n1 {
            animation-delay: 0.5s;
        }

        .pcb-connector-node-glow.n2 {
            animation-delay: 0.8s;
        }

        .pcb-connector-node-glow.n3 {
            animation-delay: 1.1s;
        }

        .pcb-connector-node-glow.n4 {
            animation-delay: 1.4s;
        }

        .pcb-connector-node-glow.relay {
            animation-delay: 1.0s;
        }

        .pcb-connector-node-glow.final {
            animation-delay: 2.2s;
        }

        @keyframes pcb-node-breathe {

            0%,
            100% {
                opacity: 0.4;
                filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.5));
            }

            50% {
                opacity: 1;
                filter: drop-shadow(0 0 10px rgba(38, 166, 154, 1)) drop-shadow(0 0 20px rgba(38, 166, 154, 0.6));
            }
        }

        /* Business -> Milestones 連接線樣式 */
        .connector-line {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 1.5;
            stroke-linecap: round;
            opacity: 0.2;
        }

        .connector-line-glow {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 2;
            stroke-linecap: round;
            opacity: 0;
            filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.8)) drop-shadow(0 0 8px rgba(38, 166, 154, 0.5));
            stroke-dasharray: 20 200;
            animation: connector-flow 2.5s ease-in-out infinite;
        }

        @keyframes connector-flow {
            0% {
                stroke-dashoffset: 20;
                opacity: 0;
            }

            15% {
                opacity: 0.9;
            }

            85% {
                opacity: 0.9;
            }

            100% {
                stroke-dashoffset: -200;
                opacity: 0;
            }
        }

        /* 連接節點 */
        .connector-node {
            fill: var(--accent-teal);
            opacity: 0.4;
        }

        .connector-node-glow {
            fill: var(--accent-teal);
            animation: connector-node-pulse 2.5s ease-in-out infinite;
        }

        @keyframes connector-node-pulse {

            0%,
            100% {
                opacity: 0.5;
                filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.6));
            }

            50% {
                opacity: 1;
                filter: drop-shadow(0 0 10px rgba(38, 166, 154, 1)) drop-shadow(0 0 20px rgba(38, 166, 154, 0.5));
            }
        }

        /* 連接器在一般模式下也顯示（較淡） */
        .hero-business-connector,
        .business-top-connector {
            opacity: 0.5;
            transition: opacity 0.5s ease;
        }

        /* 展覽模式下更明顯 */
        body.exhibition-mode .hero-business-connector,
        body.exhibition-mode .business-top-connector {
            opacity: 1;
        }

        /* 手機版隱藏連接器 */
        @media (max-width: 768px) {

            .hero-business-connector,
            .business-top-connector {
                display: none;
            }
        }

        /* ==========================================
           Core Business - 3D Orbital Reactor
           ========================================== */
        .business-section {
            position: relative;
            padding: 40px 0 80px;
            overflow: visible;
        }

        .orbital-container {
            perspective: 1400px;
            perspective-origin: 50% 50%;
            width: 100%;
            max-width: 1000px;
            height: 620px;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }

        .orbital-plane {
            position: absolute;
            width: 100%;
            height: 100%;
            transform-style: preserve-3d;
            transform: rotateX(65deg);
        }

        /* Dashed Orbital Rings - 放大版 */
        .orbit-ring {
            position: absolute;
            top: 50%;
            left: 50%;
            border-radius: 50%;
            border: 2px dashed rgba(38, 166, 154, 0.35);
            transform: translate(-50%, -50%);
        }

        .orbit-inner {
            width: 320px;
            height: 320px;
        }

        .orbit-outer {
            width: 560px;
            height: 560px;
        }

        /* Ripple Animation - Elegant 8s */
        .ripple-ring {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            border-radius: 50%;
            border: 2px solid rgba(38, 166, 154, 0.4);
            opacity: 0;
            pointer-events: none;
        }

        .ripple-ring:nth-child(1) {
            animation: ripple-expand 8s ease-out infinite 0s;
        }

        .ripple-ring:nth-child(2) {
            animation: ripple-expand 8s ease-out infinite 2s;
        }

        .ripple-ring:nth-child(3) {
            animation: ripple-expand 8s ease-out infinite 4s;
        }

        .ripple-ring:nth-child(4) {
            animation: ripple-expand 8s ease-out infinite 6s;
        }

        @keyframes ripple-expand {
            0% {
                width: 100px;
                height: 100px;
                opacity: 0;
                border-width: 3px;
            }

            8% {
                opacity: 0.7;
            }

            100% {
                width: 700px;
                height: 700px;
                opacity: 0;
                border-width: 1px;
            }
        }

        /* Center Logo - 移至 Central HUD 區塊定義 */

        @keyframes core-pulse {

            0%,
            100% {
                box-shadow:
                    0 0 40px rgba(38, 166, 154, 0.6),
                    0 0 80px rgba(38, 166, 154, 0.3);
            }

            50% {
                box-shadow:
                    0 0 60px rgba(38, 166, 154, 0.8),
                    0 0 120px rgba(38, 166, 154, 0.5);
            }
        }

        /* Business Bubbles - Counter-rotated (Colored Glow) */
        .business-bubble {
            position: absolute;
            width: 130px;
            height: 130px;
            background: rgba(255, 255, 255, 0.95);
            border: 2px solid var(--accent-teal);
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            text-decoration: none;
            box-shadow:
                0 6px 20px rgba(38, 166, 154, 0.2),
                0 0 20px rgba(38, 166, 154, 0.1);
            transition: all 0.3s ease;
            transform: rotateX(-65deg);
            animation: bubble-hover 5s ease-in-out infinite;
        }

        .business-bubble:hover {
            transform: rotateX(-65deg) scale(1.15) translateY(-10px);
            box-shadow:
                0 20px 50px oklch(0.30 0.10 148 / 0.28),
                0 0 24px oklch(0.50 0.13 148 / 0.15);
            border-color: var(--primary-green);
            z-index: 200;
        }

        .business-bubble i {
            font-size: 2.1rem;
            margin-bottom: 6px;
            color: var(--accent-teal);
        }

        .business-bubble span {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: center;
            line-height: 1.2;
        }

        /* ==========================================
           Bubble 顏色分類系統
           - 學術/教育：青綠色系 (Teal)
           - 金融/數據：金橘色系 (Gold/Orange)
           - AI/科技：紫色霓虹系 (Purple/Neon)
           ========================================== */

        /* 1. 學術研究 - 主色青綠 */
        .business-bubble.bubble-color-1 {
            border-color: var(--primary-teal);
            box-shadow: 0 6px 20px rgba(36, 121, 107, 0.25), 0 0 20px rgba(36, 121, 107, 0.15);
        }

        .business-bubble.bubble-color-1 i {
            color: var(--primary-teal);
        }

        /* 2. 永續金融 - 金色 */
        .business-bubble.bubble-color-2 {
            border-color: #D4A84B;
            box-shadow: 0 6px 20px rgba(212, 168, 75, 0.3), 0 0 20px rgba(212, 168, 75, 0.15);
        }

        .business-bubble.bubble-color-2 i {
            color: #D4A84B;
        }

        /* 3. AI 與客製方案 - 琥珀金（取代陳腔紫色） */
        .business-bubble.bubble-color-3 {
            border-color: var(--amber);
            box-shadow: 0 6px 20px oklch(0.70 0.13 72 / 0.25), 0 0 16px oklch(0.70 0.13 72 / 0.12);
        }

        .business-bubble.bubble-color-3 i {
            color: var(--amber-deep);
        }

        /* 4. 永續報告書 - 科技藍 */
        .business-bubble.bubble-color-4 {
            border-color: var(--tech-blue);
            box-shadow: 0 6px 20px rgba(62, 95, 115, 0.25), 0 0 20px rgba(62, 95, 115, 0.15);
        }

        .business-bubble.bubble-color-4 i {
            color: var(--tech-blue);
        }

        /* 5. ESG 資訊蒐集 - 橘紅色（數據相關） */
        .business-bubble.bubble-color-5 {
            border-color: #E07A5F;
            box-shadow: 0 6px 20px rgba(224, 122, 95, 0.3), 0 0 20px rgba(224, 122, 95, 0.15);
        }

        .business-bubble.bubble-color-5 i {
            color: #E07A5F;
        }

        /* 6. 教育計劃 - 鼠尾草綠（教育相關） */
        .business-bubble.bubble-color-6 {
            border-color: var(--sage-green);
            box-shadow: 0 6px 20px rgba(143, 185, 174, 0.3), 0 0 20px rgba(143, 185, 174, 0.15);
        }

        .business-bubble.bubble-color-6 i {
            color: #5a9a87;
        }

        /* Bubble Positions - 調整以配合放大的圓圈 */
        .bubble-pos-1 {
            top: 0%;
            left: 50%;
            margin-left: -65px;
            animation-delay: 0s;
        }

        .bubble-pos-2 {
            top: 24%;
            left: -2%;
            animation-delay: 0.5s;
        }

        .bubble-pos-3 {
            top: 24%;
            right: -2%;
            animation-delay: 1s;
        }

        .bubble-pos-4 {
            top: 60%;
            left: 0%;
            animation-delay: 1.5s;
        }

        .bubble-pos-5 {
            top: 60%;
            right: 0%;
            animation-delay: 2s;
        }

        .bubble-pos-6 {
            top: 90%;
            left: 50%;
            margin-left: -65px;
            animation-delay: 2.5s;
        }

        @keyframes bubble-hover {

            0%,
            100% {
                transform: rotateX(-65deg) translateY(0);
            }

            50% {
                transform: rotateX(-65deg) translateY(-8px);
            }
        }

        /* ==========================================
           Central HUD - 中央資訊控制台 (呼吸風格)
           ========================================== */

        .center-logo {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) rotateX(-65deg);
            width: 140px;
            height: 140px;
            background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.98), rgba(242, 245, 244, 0.95));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 100;
            border: 3px solid rgba(36, 121, 107, 0.5);
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            overflow: visible;
            animation: logo-breathe 4s ease-in-out infinite;
        }

        /* 待機狀態 - 純呼吸動畫 */
        @keyframes logo-breathe {

            0%,
            100% {
                transform: translate(-50%, -50%) rotateX(-65deg) scale(1);
                border-color: rgba(36, 121, 107, 0.4);
                box-shadow:
                    0 0 20px rgba(36, 121, 107, 0.2),
                    0 0 40px rgba(36, 121, 107, 0.1);
            }

            50% {
                transform: translate(-50%, -50%) rotateX(-65deg) scale(1.03);
                border-color: rgba(36, 121, 107, 0.7);
                box-shadow:
                    0 0 30px rgba(36, 121, 107, 0.4),
                    0 0 60px rgba(36, 121, 107, 0.2);
            }
        }

        /* 待機狀態 - 外圍呼吸光暈 */
        .center-logo::after {
            content: '';
            position: absolute;
            top: -20px;
            left: -20px;
            right: -20px;
            bottom: -20px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(36, 121, 107, 0.25) 0%, transparent 70%);
            animation: glow-breathe 4s ease-in-out infinite;
            z-index: -1;
        }

        @keyframes glow-breathe {

            0%,
            100% {
                transform: scale(1);
                opacity: 0.4;
            }

            50% {
                transform: scale(1.15);
                opacity: 0.7;
            }
        }

        /* HUD 啟動狀態 */
        .center-logo.hud-active {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: radial-gradient(circle at center,
                    rgba(255, 255, 255, 0.95) 0%,
                    rgba(242, 245, 244, 0.9) 70%,
                    rgba(230, 240, 238, 0.85) 100%);
            border: 3px solid var(--hud-color, var(--primary-teal));
            animation: none;
            box-shadow:
                0 0 25px var(--hud-color, rgba(36, 121, 107, 0.4)),
                0 0 50px var(--hud-color, rgba(36, 121, 107, 0.2)),
                inset 0 0 20px rgba(255, 255, 255, 0.5);
        }

        .center-logo.hud-active::after {
            animation: none;
            opacity: 0;
        }

        /* 啟動時的外環動畫 */
        .hud-outer-ring {
            position: absolute;
            top: -15px;
            left: -15px;
            right: -15px;
            bottom: -15px;
            border-radius: 50%;
            border: 1.5px dashed transparent;
            opacity: 0;
            transition: all 0.4s ease;
        }

        .center-logo.hud-active .hud-outer-ring {
            opacity: 1;
            border-color: var(--hud-color, var(--primary-teal));
            animation: ring-rotate 12s linear infinite;
        }

        @keyframes ring-rotate {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        .hud-logo-state {
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.4s ease;
        }

        .center-logo.hud-active .hud-logo-state {
            opacity: 0;
            transform: scale(0.5);
            position: absolute;
        }

        .hud-info-state {
            position: absolute;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 15px;
            opacity: 0;
            transform: scale(0.8);
            transition: all 0.4s ease 0.1s;
        }

        .center-logo.hud-active .hud-info-state {
            opacity: 1;
            transform: scale(1);
        }

        .hud-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--hud-color, var(--primary-teal));
            margin-bottom: 8px;
            letter-spacing: 0.5px;
            font-family: 'Noto Sans TC', sans-serif;
        }

        .hud-desc {
            font-size: 0.875rem;
            font-weight: 400;
            color: var(--text-dark);
            line-height: 1.65;
            max-width: 150px;
        }

        /* 氣泡 hover 時的強調效果 */
        .business-bubble.bubble-hovered {
            transform: rotateX(-65deg) scale(1.12) !important;
            z-index: 250;
            filter: brightness(1.05);
        }

        /* ==========================================
           Milestones - Downward Roots (向下紮根)
           PCB 線條從 Business 向下生長
           ========================================== */
        .milestones-section {
            position: relative;
            padding: 60px 0 40px;
            background: transparent;
            overflow: visible;
        }

        /* PCB SVG Background */
        .pcb-svg-bg {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            max-width: 1200px;
            height: 100%;
            min-height: 1000px;
            z-index: 0;
            pointer-events: none;
        }

        /* ==========================================
           新版電路圖 - 霓虹流動效果
           ========================================== */

        /* 基礎線條 - 細且半透明 */
        .pcb-trunk {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 1.5;
            stroke-linecap: round;
            stroke-linejoin: round;
            opacity: 0.2;
        }

        .pcb-branch {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 1;
            stroke-linecap: round;
            opacity: 0.15;
        }

        /* 霓虹流動線條 - 向下延伸 */
        .neon-flow {
            fill: none;
            stroke: var(--accent-teal);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            opacity: 0;
            filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.8)) drop-shadow(0 0 8px rgba(38, 166, 154, 0.5));
        }

        /* 主幹流動 - 從上往下 */
        .neon-flow.trunk {
            stroke-dasharray: 80 1000;
            animation: flow-down-trunk 4s ease-in-out infinite;
        }

        @keyframes flow-down-trunk {
            0% {
                stroke-dashoffset: 80;
                opacity: 0;
            }

            5% {
                opacity: 0.9;
            }

            95% {
                opacity: 0.9;
            }

            100% {
                stroke-dashoffset: -920;
                opacity: 0;
            }
        }

        /* 分支流動 - 從主幹分出 */
        .neon-flow.branch {
            stroke-dasharray: 40 500;
            opacity: 0;
        }

        .neon-flow.branch-1 {
            animation: flow-branch 2s ease-out infinite;
            animation-delay: 1s;
        }

        .neon-flow.branch-2 {
            stroke: var(--purple-accent);
            filter: drop-shadow(0 0 4px rgba(139, 92, 246, 0.8)) drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
            animation: flow-branch 2s ease-out infinite;
            animation-delay: 2s;
        }

        .neon-flow.branch-3 {
            animation: flow-branch 2s ease-out infinite;
            animation-delay: 3s;
        }

        .neon-flow.branch-4 {
            stroke: var(--orange-accent);
            filter: drop-shadow(0 0 4px rgba(251, 146, 60, 0.8)) drop-shadow(0 0 8px rgba(251, 146, 60, 0.5));
            animation: flow-branch 2s ease-out infinite;
            animation-delay: 3.8s;
        }

        .neon-flow.branch-5 {
            stroke: var(--purple-accent);
            filter: drop-shadow(0 0 4px rgba(139, 92, 246, 0.8)) drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
            animation: flow-branch 2s ease-out infinite;
            animation-delay: 4.5s;
        }

        .neon-flow.branch-6 {
            animation: flow-branch 2s ease-out infinite;
            animation-delay: 5.2s;
        }

        @keyframes flow-branch {
            0% {
                stroke-dashoffset: 40;
                opacity: 0;
            }

            10% {
                opacity: 0.9;
            }

            90% {
                opacity: 0.9;
            }

            100% {
                stroke-dashoffset: -200;
                opacity: 0;
            }
        }

        /* 端點節點 - 基礎樣式 */
        .node-base {
            fill: var(--accent-teal);
            opacity: 0.3;
        }

        /* 端點節點 - 呼吸光暈效果 */
        .node-glow {
            fill: var(--accent-teal);
            opacity: 0;
            filter: drop-shadow(0 0 6px rgba(38, 166, 154, 0.9)) drop-shadow(0 0 12px rgba(38, 166, 154, 0.6));
        }

        .node-glow.node-1 {
            animation: node-glow-breathe 3s ease-in-out infinite;
            animation-delay: 0s;
        }

        .node-glow.node-2 {
            fill: var(--purple-accent);
            filter: drop-shadow(0 0 6px rgba(139, 92, 246, 0.9)) drop-shadow(0 0 12px rgba(139, 92, 246, 0.6));
            animation: node-glow-breathe-purple 3s ease-in-out infinite;
            animation-delay: 0.5s;
        }

        .node-glow.node-3 {
            animation: node-glow-breathe 3s ease-in-out infinite;
            animation-delay: 1s;
        }

        .node-glow.node-4 {
            fill: var(--orange-accent);
            filter: drop-shadow(0 0 6px rgba(251, 146, 60, 0.9)) drop-shadow(0 0 12px rgba(251, 146, 60, 0.6));
            animation: node-glow-breathe-orange 3s ease-in-out infinite;
            animation-delay: 1.5s;
        }

        .node-glow.node-5 {
            fill: var(--purple-accent);
            filter: drop-shadow(0 0 6px rgba(139, 92, 246, 0.9)) drop-shadow(0 0 12px rgba(139, 92, 246, 0.6));
            animation: node-glow-breathe-purple 3s ease-in-out infinite;
            animation-delay: 2s;
        }

        .node-glow.node-6 {
            animation: node-glow-breathe 3s ease-in-out infinite;
            animation-delay: 2.5s;
        }

        /* 端點節點呼吸發光動畫 - 不縮放 */
        @keyframes node-glow-breathe {

            0%,
            100% {
                opacity: 0.5;
                filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.6)) drop-shadow(0 0 8px rgba(38, 166, 154, 0.3));
            }

            50% {
                opacity: 1;
                filter: drop-shadow(0 0 8px rgba(38, 166, 154, 1)) drop-shadow(0 0 16px rgba(38, 166, 154, 0.7)) drop-shadow(0 0 24px rgba(38, 166, 154, 0.4));
            }
        }

        @keyframes node-glow-breathe-purple {

            0%,
            100% {
                opacity: 0.5;
                filter: drop-shadow(0 0 4px rgba(139, 92, 246, 0.6)) drop-shadow(0 0 8px rgba(139, 92, 246, 0.3));
            }

            50% {
                opacity: 1;
                filter: drop-shadow(0 0 8px rgba(139, 92, 246, 1)) drop-shadow(0 0 16px rgba(139, 92, 246, 0.7)) drop-shadow(0 0 24px rgba(139, 92, 246, 0.4));
            }
        }

        @keyframes node-glow-breathe-orange {

            0%,
            100% {
                opacity: 0.5;
                filter: drop-shadow(0 0 4px rgba(251, 146, 60, 0.6)) drop-shadow(0 0 8px rgba(251, 146, 60, 0.3));
            }

            50% {
                opacity: 1;
                filter: drop-shadow(0 0 8px rgba(251, 146, 60, 1)) drop-shadow(0 0 16px rgba(251, 146, 60, 0.7)) drop-shadow(0 0 24px rgba(251, 146, 60, 0.4));
            }
        }

        /* 主幹中繼節點 */
        .node-relay {
            fill: var(--accent-teal);
            opacity: 0.2;
        }

        .node-relay-glow {
            fill: var(--accent-teal);
            opacity: 0;
            filter: drop-shadow(0 0 4px rgba(38, 166, 154, 0.8));
        }

        .node-relay-glow.relay-1 {
            animation: relay-flash 4s ease-out infinite;
            animation-delay: 0.5s;
        }

        .node-relay-glow.relay-2 {
            animation: relay-flash 4s ease-out infinite;
            animation-delay: 1.2s;
        }

        .node-relay-glow.relay-3 {
            animation: relay-flash 4s ease-out infinite;
            animation-delay: 1.9s;
        }

        .node-relay-glow.relay-4 {
            animation: relay-flash 4s ease-out infinite;
            animation-delay: 2.6s;
        }

        .node-relay-glow.relay-5 {
            animation: relay-flash 4s ease-out infinite;
            animation-delay: 3.3s;
        }

        .node-relay-glow.relay-6 {
            animation: relay-flash 4s ease-out infinite;
            animation-delay: 4.0s;
        }

        @keyframes relay-flash {

            0%,
            5% {
                opacity: 0;
            }

            10% {
                opacity: 1;
            }

            20% {
                opacity: 0.3;
            }

            100% {
                opacity: 0;
            }
        }

        /* 頂部起點 - 純發光呼吸效果（不縮放） */
        .node-source {
            fill: var(--accent-teal);
        }

        .node-source-glow {
            fill: var(--accent-teal);
            animation: source-glow-breathe 2.5s ease-in-out infinite;
        }

        @keyframes source-glow-breathe {

            0%,
            100% {
                filter: drop-shadow(0 0 6px rgba(38, 166, 154, 0.7)) drop-shadow(0 0 12px rgba(38, 166, 154, 0.4));
                opacity: 0.7;
            }

            50% {
                filter: drop-shadow(0 0 12px rgba(38, 166, 154, 1)) drop-shadow(0 0 24px rgba(38, 166, 154, 0.8)) drop-shadow(0 0 36px rgba(38, 166, 154, 0.4));
                opacity: 1;
            }
        }

        /* Timeline Container */
        .timeline-container {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 50px;
            display: flex;
            align-items: center;
            opacity: 0;
            animation: timeline-slide-in 0.6s ease forwards;
        }

        .timeline-item:nth-child(1) {
            animation-delay: 0.1s;
        }

        .timeline-item:nth-child(2) {
            animation-delay: 0.2s;
        }

        .timeline-item:nth-child(3) {
            animation-delay: 0.3s;
        }

        .timeline-item:nth-child(4) {
            animation-delay: 0.4s;
        }

        .timeline-item:nth-child(5) {
            animation-delay: 0.5s;
        }

        .timeline-item:nth-child(6) {
            animation-delay: 0.6s;
        }

        @keyframes timeline-slide-in {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .timeline-item.left {
            justify-content: flex-start;
            padding-right: 54%;
        }

        .timeline-item.right {
            justify-content: flex-end;
            padding-left: 54%;
        }

        /* Timeline Card with Colored Glow */
        .timeline-card {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-teal);
            border-radius: 16px;
            padding: 22px 26px;
            max-width: 340px;
            box-shadow:
                0 8px 24px rgba(38, 166, 154, 0.15),
                0 0 20px rgba(38, 166, 154, 0.08);
            transition: all 0.3s ease;
        }

        .timeline-card:hover {
            transform: scale(1.03);
            box-shadow:
                0 16px 40px oklch(0.50 0.13 148 / 0.18),
                0 2px 8px oklch(0.30 0.10 148 / 0.08);
            border-color: var(--accent-green);
        }

        /* 偶數卡片：琥珀金邊框，建立左右交替的色彩韻律 */
        .timeline-item:nth-child(even) .timeline-card {
            border-color: var(--amber);
            box-shadow:
                0 8px 24px oklch(0.70 0.13 72 / 0.12),
                0 2px 6px oklch(0.52 0.15 68 / 0.06);
        }

        .timeline-item:nth-child(even) .timeline-card:hover {
            border-color: var(--amber-deep);
            box-shadow:
                0 16px 40px oklch(0.70 0.13 72 / 0.20),
                0 2px 8px oklch(0.52 0.15 68 / 0.10);
        }

        .timeline-year {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-green);
            margin-bottom: 4px;
            line-height: 1;
            font-family: 'Noto Serif TC', serif;
        }

        /* 偶數年份：琥珀金，與邊框呼應 */
        .timeline-item:nth-child(even) .timeline-year {
            color: var(--amber);
        }

        .timeline-title {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--primary-teal);
            margin-bottom: 8px;
        }

        .timeline-desc {
            font-size: 0.9375rem;
            color: #374151;
            line-height: 1.75;
        }

        /* Mobile Timeline */
        @media (max-width: 768px) {

            .timeline-item.left,
            .timeline-item.right {
                padding: 0;
                justify-content: center;
            }

            .timeline-card {
                max-width: 100%;
            }

            .pcb-svg-bg {
                display: none;
            }
        }

        /* ==========================================
           Floating QR Code & Tooltip (Colored Glow)
           ========================================== */
        .floating-qr-btn {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 58px;
            height: 58px;
            background: var(--primary-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 16px oklch(0.30 0.10 148 / 0.30);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .floating-qr-btn:hover {
            transform: scale(1.1);
            box-shadow:
                0 10px 32px rgba(38, 166, 154, 0.5),
                0 0 30px rgba(38, 166, 154, 0.3);
        }

        .floating-qr-btn i {
            font-size: 1.4rem;
            color: white;
        }

        /* QR Tooltip */
        .qr-tooltip {
            position: fixed;
            bottom: 95px;
            right: 28px;
            background: var(--primary-teal);
            color: white;
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 0.85rem;
            font-weight: 500;
            box-shadow:
                0 4px 16px rgba(38, 166, 154, 0.3),
                0 0 20px rgba(38, 166, 154, 0.15);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.4s ease;
            z-index: 1001;
            white-space: nowrap;
        }

        .qr-tooltip::after {
            content: '';
            position: absolute;
            bottom: -8px;
            right: 20px;
            border-left: 8px solid transparent;
            border-right: 8px solid transparent;
            border-top: 8px solid var(--primary-teal);
        }

        .qr-tooltip.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .qr-panel {
            position: fixed;
            bottom: 100px;
            right: 28px;
            width: 270px;
            background: white;
            border-radius: 20px;
            padding: 22px;
            box-shadow:
                0 16px 50px rgba(38, 166, 154, 0.25),
                0 0 40px rgba(38, 166, 154, 0.1);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(15px) scale(0.95);
            transition: all 0.3s ease;
        }

        .qr-panel.active {
            opacity: 1;
            visibility: visible;
            transform: translateY(0) scale(1);
        }

        /* 展覽模式下 QR panel 常開 */
        body.exhibition-mode .qr-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0) scale(1);
        }

        /* 展覽模式下隱藏 QR 按鈕（因為 panel 已常開） */
        body.exhibition-mode .floating-qr-btn,
        body.exhibition-mode .qr-tooltip {
            opacity: 0;
            visibility: hidden;
        }

        .qr-panel-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--primary-teal);
            margin-bottom: 14px;
            text-align: center;
        }

        .qr-code-container {
            width: 150px;
            height: 150px;
            margin: 0 auto 14px;
            background: #f9f9f9;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 14px;
        }

        .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-mint);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-teal);
            transition: all 0.3s ease;
        }

        .social-links a:hover {
            background: var(--accent-teal);
            color: white;
            box-shadow: 0 0 15px rgba(38, 166, 154, 0.4);
        }

        /* Exhibition Mode Indicator */
        .exhibition-indicator {
            position: fixed;
            bottom: 28px;
            left: 28px;
            background: rgba(0, 121, 107, 0.9);
            color: white;
            padding: 10px 18px;
            border-radius: 24px;
            font-size: 0.85rem;
            opacity: 0;
            transition: opacity 0.5s ease;
            z-index: 1000;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 0 20px rgba(38, 166, 154, 0.3);
        }

        .exhibition-indicator.active {
            opacity: 1;
        }

        .exhibition-indicator.fade-out {
            opacity: 0;
        }

        .exhibition-indicator::before {
            content: '';
            width: 8px;
            height: 8px;
            background: #4ade80;
            border-radius: 50%;
            animation: pulse-indicator 1.5s ease-in-out infinite;
        }

        @keyframes pulse-indicator {

            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }

            50% {
                opacity: 0.5;
                transform: scale(1.3);
            }
        }

        /* Section Title */
        .section-title {
            position: relative;
            display: inline-block;
            padding-bottom: 14px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 48px;
            height: 3px;
            background: var(--amber);
            border-radius: 1px;
        }

        /* Mobile Grid for Business */
        .mobile-business-grid {
            display: none;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
            padding: 0 16px;
        }

        @media (max-width: 768px) {
            .orbital-container {
                display: none;
            }

            .mobile-business-grid {
                display: grid !important;
            }

            .waterfall-svg-container {
                height: 80px;
            }
        }

        .mobile-business-card {
            background: rgba(255, 255, 255, 0.92);
            border: 2px solid var(--accent-teal);
            border-radius: 16px;
            padding: 18px 12px;
            text-align: center;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(38, 166, 154, 0.1);
        }

        .mobile-business-card:hover {
            transform: translateY(-4px);
            box-shadow:
                0 10px 28px rgba(38, 166, 154, 0.2),
                0 0 20px rgba(38, 166, 154, 0.1);
        }

        .mobile-business-card i {
            font-size: 1.9rem;
            color: var(--accent-teal);
            margin-bottom: 8px;
        }

        .mobile-business-card.ai-special {
            border-color: var(--amber);
            box-shadow: 0 4px 12px oklch(0.70 0.13 72 / 0.14);
        }

        .mobile-business-card.ai-special:hover {
            box-shadow:
                0 10px 28px oklch(0.70 0.13 72 / 0.22),
                0 2px 8px oklch(0.52 0.15 68 / 0.10);
        }

        .mobile-business-card.ai-special i {
            color: var(--amber-deep);
        }

        .mobile-business-card span {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        .mobile-card-desc {
            display: block;
            font-size: 0.875rem;
            font-weight: 400;
            color: #555;
            margin-top: 6px;
            line-height: 1.55;
        }

        /* ==========================================
           Exhibition Mode - Full Page Sections
           ========================================== */

        /* 展覽模式下的全頁切換 */
        body.exhibition-mode {
            scroll-snap-type: y mandatory;
            overflow-y: scroll;
            scroll-behavior: smooth;
        }

        body.exhibition-mode .page-section {
            scroll-snap-align: start;
            scroll-snap-stop: always;
            min-height: 100vh;
            min-height: 100dvh;
            /* 動態視窗高度，解決手機瀏覽器問題 */
            position: relative;
            overflow: hidden;
        }

        /* 里程碑區塊允許內部滾動（內容較長時） */
        body.exhibition-mode .milestones-section {
            overflow-y: auto;
            overflow-x: hidden;
            max-height: 100vh;
            max-height: 100dvh;
        }

        /* 展覽模式下，確保 PCB SVG 背景完整顯示 */
        body.exhibition-mode .milestones-section .pcb-svg-bg {
            position: fixed;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            height: 100vh;
            z-index: 0;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.5s ease, visibility 0.5s ease;
        }

        /* 展覽模式下，非活躍區塊的動畫暫停 */
        body.exhibition-mode .page-section:not(.section-active) .waterfall-line,
        body.exhibition-mode .page-section:not(.section-active) .ripple-ring,
        body.exhibition-mode .page-section:not(.section-active) .pcb-trunk-glow,
        body.exhibition-mode .page-section:not(.section-active) .business-bubble,
        body.exhibition-mode .page-section:not(.section-active) .center-logo {
            animation-play-state: paused;
        }

        /* 活躍區塊恢復動畫 */
        body.exhibition-mode .page-section.section-active .waterfall-line,
        body.exhibition-mode .page-section.section-active .ripple-ring,
        body.exhibition-mode .page-section.section-active .pcb-trunk-glow,
        body.exhibition-mode .page-section.section-active .business-bubble,
        body.exhibition-mode .page-section.section-active .center-logo {
            animation-play-state: running;
        }

        /* 展覽模式下隱藏 Hero 和 Business 的電路圖效果（保留粒子特效） */
        body.exhibition-mode .circuit-tree-container,
        body.exhibition-mode .hero-business-connector {
            opacity: 0 !important;
            visibility: hidden;
            display: none !important;
        }

        /* 展覽模式下，只在里程碑區塊活躍時顯示 PCB 電路圖 */
        body.exhibition-mode .milestones-section.section-active .pcb-svg-bg {
            opacity: 1;
            visibility: visible;
        }

        /* 展覽模式的頁面指示器 */
        .exhibition-page-indicator {
            position: fixed;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 1001;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
        }

        body.exhibition-mode .exhibition-page-indicator {
            opacity: 1;
            visibility: visible;
        }

        .page-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(38, 166, 154, 0.3);
            border: 2px solid var(--accent-teal);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .page-dot:hover {
            background: rgba(38, 166, 154, 0.5);
            transform: scale(1.2);
        }

        .page-dot.active {
            background: var(--accent-teal);
            box-shadow: 0 0 12px rgba(38, 166, 154, 0.6);
            transform: scale(1.3);
        }

        /* 展覽模式提示標籤 */
        .exhibition-badge {
            position: fixed;
            top: 100px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary-green);
            color: white;
            padding: 10px 24px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(38, 166, 154, 0.4);
            z-index: 1002;
            opacity: 0;
            visibility: hidden;
            transition: all 0.5s ease;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .exhibition-badge.show {
            opacity: 1;
            visibility: visible;
        }

        .exhibition-badge i {
            animation: pulse-icon 1.5s ease-in-out infinite;
        }

        @keyframes pulse-icon {

            0%,
            100% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.2);
            }
        }

        /* 展覽模式開關按鈕 */
        .exhibition-toggle {
            position: fixed;
            bottom: 28px;
            left: 100px;
            background: rgba(0, 121, 107, 0.9);
            color: white;
            padding: 10px 18px;
            border-radius: 24px;
            font-size: 0.85rem;
            cursor: pointer;
            z-index: 1000;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(38, 166, 154, 0.3);
            transition: all 0.3s ease;
            border: none;
        }

        .exhibition-toggle:hover {
            background: var(--primary-teal);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(38, 166, 154, 0.4);
        }

        .exhibition-toggle.active {
            background: var(--purple-accent);
            box-shadow: 0 4px 16px rgba(139, 92, 246, 0.4);
        }

        /* 自動輪播進度條 */
        .autoplay-progress {
            position: fixed;
            bottom: 0;
            left: 0;
            height: 3px;
            background: var(--accent-green);
            width: 0%;
            z-index: 1003;
            transition: width 0.1s linear;
            opacity: 0;
        }

        body.exhibition-mode .autoplay-progress {
            opacity: 1;
        }

        /* 手機版展覽模式調整 */
        @media (max-width: 768px) {
            .exhibition-page-indicator {
                right: 10px;
                gap: 8px;
            }

            .page-dot {
                width: 10px;
                height: 10px;
            }

            .exhibition-badge {
                top: 80px;
                padding: 8px 16px;
                font-size: 0.8rem;
            }

            .exhibition-toggle {
                left: auto;
                right: 100px;
                bottom: 28px;
                padding: 8px 14px;
                font-size: 0.8rem;
            }
        }

        /* ==========================================
           能量指示器 - 固定在左側的視覺主軸
           ========================================== */
        .energy-indicator {
            position: fixed;
            left: 30px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 1001;
            opacity: 0;
            visibility: hidden;
            transition: all 0.5s ease;
        }

        body.exhibition-mode .energy-indicator {
            opacity: 1;
            visibility: visible;
        }

        .energy-line {
            width: 2px;
            height: 200px;
            background: linear-gradient(180deg,
                    rgba(38, 166, 154, 0.1) 0%,
                    rgba(38, 166, 154, 0.3) 50%,
                    rgba(38, 166, 154, 0.1) 100%);
            position: relative;
            border-radius: 1px;
        }

        .energy-node {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(38, 166, 154, 0.3);
            border: 2px solid var(--accent-teal);
            transition: all 0.5s ease;
            cursor: pointer;
        }

        .energy-node::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-teal);
            opacity: 0;
            transition: all 0.3s ease;
        }

        .energy-node.active {
            background: var(--accent-teal);
            box-shadow: 0 0 15px rgba(38, 166, 154, 0.8),
                0 0 30px rgba(38, 166, 154, 0.4);
            transform: translateX(-50%) scale(1.3);
        }

        .energy-node.active::before {
            opacity: 1;
            animation: node-inner-pulse 1.5s ease-in-out infinite;
        }

        @keyframes node-inner-pulse {

            0%,
            100% {
                transform: translate(-50%, -50%) scale(1);
                opacity: 1;
            }

            50% {
                transform: translate(-50%, -50%) scale(1.5);
                opacity: 0.6;
            }
        }

        .energy-node:nth-child(1) {
            top: 0;
        }

        .energy-node:nth-child(2) {
            top: 50%;
            transform: translate(-50%, -50%);
        }

        .energy-node:nth-child(2).active {
            transform: translate(-50%, -50%) scale(1.3);
        }

        .energy-node:nth-child(3) {
            bottom: 0;
            top: auto;
        }

        /* 能量流動光點 */
        .energy-flow-dot {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-teal);
            box-shadow: 0 0 10px rgba(38, 166, 154, 1),
                0 0 20px rgba(38, 166, 154, 0.6);
            opacity: 0;
        }

        .energy-flow-dot.flowing {
            animation: energy-flow 1s ease-in-out forwards;
        }

        @keyframes energy-flow {
            0% {
                top: 0;
                opacity: 0;
            }

            10% {
                opacity: 1;
            }

            90% {
                opacity: 1;
            }

            100% {
                top: 100%;
                opacity: 0;
            }
        }

        @keyframes energy-flow-reverse {
            0% {
                top: 100%;
                opacity: 0;
            }

            10% {
                opacity: 1;
            }

            90% {
                opacity: 1;
            }

            100% {
                top: 0;
                opacity: 0;
            }
        }

        /* 節點標籤 */
        .energy-node-label {
            position: absolute;
            left: 25px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 0.7rem;
            color: var(--accent-teal);
            white-space: nowrap;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .energy-node:hover .energy-node-label,
        .energy-node.active .energy-node-label {
            opacity: 1;
        }

        /* 手機版隱藏能量指示器 */
        @media (max-width: 768px) {
            .energy-indicator {
                display: none;
            }
        }

        /* ==========================================
           Particle Trail Effect (粒子拖尾特效)
           從 Hero 數據卡片流向核心業務
           ========================================== */
        .particle-container {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            pointer-events: none;
            z-index: 1;
            overflow: visible;
        }

        #particleCanvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            pointer-events: none;
        }

        @media (max-width: 768px) {

            #particleCanvas,
            .particle-container {
                display: none;
            }
        }


/* === 轉換自 inline style="" === */
.is-a9c35c21 {
    color: var(--accent-green);
}

.is-7d1bbd61 {
    color: var(--primary-green);
}

.is-0b3eee54 {
    color: var(--amber);
}

.is-f9de9a1a {
    color: var(--amber-deep);
}

.is-4f36dc74 {
    fill: var(--amber);
}

.is-88bfeb45 {
    fill: var(--amber-deep);
}

/* ==========================================
   REDESIGNED HERO — 全寬分割：文字 + 海岸圖
   ========================================== */

/* Hero section 重置：padding 由子元素控制；flex-start 避免縮短後留白被平均分配 */
.hero-section {
    padding: 0;
    justify-content: flex-start;
}

/* ── 全寬分割區 ── */
.hero-split {
    display: grid;
    grid-template-columns: 56fr 44fr;
    min-height: 62vh;
    width: 100%;
}

/* 文字面板：內距對齊 container，讓文字與全站對齊 */
.hero-text-panel {
    display: flex;
    align-items: center;
    padding-top: 120px;
    padding-bottom: 60px;
    /* 動態左距：viewport > 1280px 時對齊 container，小螢幕保留 1.5rem */
    padding-left: max(1.5rem, calc((100vw - 1280px) / 2 + 1.5rem));
    padding-right: clamp(32px, 5vw, 80px);
}

.hero-text-inner {
    max-width: 640px;
}

/* 主標題 */
.hero-heading {
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(3rem, 5.5vw, 5.75rem);
    font-weight: 700;
    line-height: 1.05;
    color: oklch(0.22 0.07 148);
    letter-spacing: -0.04em;
    margin-bottom: 32px;
}

/* 使命段落 */
.hero-mission-text {
    font-size: 1.0625rem;
    line-height: 1.9;
    color: oklch(0.38 0.07 148);
    max-width: 52ch;
    margin-bottom: 28px;
}

/* 三項核心能力標籤 */
.hero-core-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.hero-core-tags span {
    font-size: 0.825rem;
    font-weight: 600;
    color: oklch(0.35 0.09 148);
    background: oklch(0.96 0.02 148);
    border: 1px solid oklch(0.78 0.05 148);
    padding: 5px 14px;
    border-radius: 2px;
    letter-spacing: 0.04em;
}

/* ── 圖片面板 ── */
.hero-image-panel {
    position: relative;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 取景在綠色海岸陸地 + 懸崖交界處 */
    object-position: 35% 45%;
    /* 壓制過飽和的藍，讓色調靠近森林綠系統 */
    filter: saturate(0.82) brightness(0.96);
    display: block;
}

/* 柔性過渡：從頁面底色淡入，避免文字與圖片硬切 */
.hero-image-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to right,
        oklch(0.97 0.015 148 / 0.35) 0%,
        transparent 28%
    );
    z-index: 1;
    pointer-events: none;
}

/* ==========================================
   憑證條 — 純排版，無容器、無圖示
   ========================================== */
.credential-strip {
    display: flex;
    align-items: flex-start;
    border-top: 1px solid oklch(0.82 0.04 162);
    padding-top: 60px;
    padding-bottom: 80px;
}

.credential-item {
    flex: 1;
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 0 clamp(16px, 3vw, 40px);
}

.credential-item:first-child {
    padding-left: 0;
}

.credential-item:last-child {
    padding-right: 0;
}

.credential-item:nth-child(3) {
    align-items: flex-start;
}

.credential-item:nth-child(3) .cred-label {
    padding-top: 0.5rem;
}

/* 短語錨點 — 第一行是完整短語，視覺主角 */
.cred-num {
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(2.25rem, 3.5vw, 3.5rem);
    font-weight: 700;
    color: oklch(0.30 0.10 148);
    line-height: 1.15;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

/* 文字說明 */
.cred-label {
    font-size: 0.9rem;
    color: oklch(0.42 0.07 148);
    line-height: 1.65;
    letter-spacing: 0.01em;
}

.cred-label em {
    font-style: normal;
    color: oklch(0.56 0.07 162);
    font-size: 0.9em;
    display: block;
    margin-top: 2px;
}

/* 分隔線 */
.credential-sep {
    display: block;
    width: 1px;
    height: 44px;
    background: oklch(0.82 0.04 162);
    flex-shrink: 0;
}

/* ==========================================
   響應式
   ========================================== */
@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 640px) {
    .hero-section {
        padding: 100px 0 60px;
    }

    .credential-strip {
        flex-direction: row;
        align-items: flex-start;
        gap: 0;
        padding-top: 28px;
    }

    .credential-item {
        flex: 1;
        padding: 12px 10px;
        border-bottom: none;
        width: auto;
    }

    .credential-item:not(:last-child) {
        border-right: 1px solid oklch(0.88 0.03 148);
    }

    .credential-sep {
        display: none;
    }

    .cred-num {
        font-size: 1.55rem;
        line-height: 1.2;
    }

    .cred-label {
        font-size: 0.78rem;
    }
}

/* ==========================================
   REDESIGNED MILESTONE TIMELINE
   純排版式時間軸 — 移除 PCB/霓虹美學
   以年份為主視覺錨點，建立學術編輯感
   ========================================== */

/* 隱藏舊版 PCB SVG（若 JS 保有參照仍安全） */
.pcb-svg-bg {
    display: none !important;
}

/* 中央時間軸主幹線 */
.timeline-container::before {
    content: '';
    position: absolute;
    top: 40px;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: linear-gradient(
        to bottom,
        oklch(0.84 0.03 148) 0%,
        oklch(0.84 0.03 148) 80%,
        transparent 100%
    );
    transform: translateX(-50%);
    z-index: 0;
}

/* 主幹連接節點 — 色彩呼應卡片 */
.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 28px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    background: var(--accent-green);
    box-shadow:
        0 0 0 3px var(--bg-tint),
        0 0 0 4.5px oklch(0.72 0.07 148 / 0.5);
}

.timeline-item:nth-child(even)::before {
    background: var(--amber);
    box-shadow:
        0 0 0 3px var(--bg-tint),
        0 0 0 4.5px oklch(0.82 0.08 72 / 0.5);
}

/* 卡片：移除玻璃擬態，改為乾淨學術感 */
.timeline-card {
    background: white;
    border: 1px solid oklch(0.88 0.03 148);
    border-radius: 6px;
    padding: 28px 32px;
    max-width: 360px;
    box-shadow: 0 1px 8px oklch(0.50 0.13 148 / 0.05);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.timeline-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px oklch(0.50 0.13 148 / 0.10);
    border-color: oklch(0.72 0.08 148);
}

.timeline-item:nth-child(even) .timeline-card {
    border-color: oklch(0.88 0.05 72);
    box-shadow: 0 1px 8px oklch(0.70 0.13 72 / 0.05);
}

.timeline-item:nth-child(even) .timeline-card:hover {
    border-color: oklch(0.72 0.10 72);
    box-shadow: 0 6px 20px oklch(0.70 0.13 72 / 0.12);
}

/* 年份：強調為章節數字，serif 傳達學術典藏感 */
.timeline-year {
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(3rem, 4vw, 4.25rem);
    font-weight: 700;
    line-height: 1;
    margin-bottom: 10px;
    font-family: 'Noto Serif TC', serif;
    color: var(--accent-green);
    letter-spacing: -0.04em;
}

.timeline-item:nth-child(even) .timeline-year {
    color: var(--amber);
}

/* 標題：增加字重對比 */
.timeline-title {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.4;
}

/* 說明文字 */
.timeline-desc {
    font-size: 0.9375rem;
    color: oklch(0.40 0.06 148);
    line-height: 1.8;
}

/* 最後一項不留底部間距，讓線貼近容器底 */
.timeline-item:last-child {
    margin-bottom: 0;
}

@media (prefers-reduced-motion: reduce) {
    .timeline-card {
        transition: none;
    }
    .timeline-card:hover {
        transform: none;
    }
}

/* 手機版：隱藏中央主幹線與節點 */
@media (max-width: 768px) {
    .timeline-container::before,
    .timeline-item::before {
        display: none;
    }
}

/* ==========================================
   REDESIGNED BUSINESS SECTION
   編輯式功能面板 — 取代 3D 軌道
   ========================================== */

.business-section {
    padding: 100px 0 120px;
}

/* Section heading */
.biz-section-header {
    margin-bottom: 40px;
}

.biz-eyebrow {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: oklch(0.50 0.09 148);
    font-weight: 500;
    margin-bottom: 10px;
}

.biz-h2 {
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(2.25rem, 3.75vw, 3.25rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.03em;
    line-height: 1.15;
}

/* ── 主面板：Tab 橫排 + 下方展示 ── */
.biz-panel {
    display: flex;
    flex-direction: column;
    min-height: auto;
    align-items: stretch;
    gap: 0;
}

/* 上：橫向 Tab 列 */
.biz-nav {
    display: flex;
    flex-direction: row;
    background: transparent;
    border-bottom: 1px solid oklch(0.86 0.03 148);
}

.biz-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 20px 8px 18px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
    text-align: center;
    transition: border-color 0.2s ease, opacity 0.2s ease;
    flex: 1;
}

.biz-nav-item:last-child {
    border-bottom: 2px solid transparent;
}

.biz-nav-item.is-active {
    background: transparent;
    border-bottom: 2px solid var(--primary-green);
}

.biz-nav-item:hover:not(.is-active) {
    opacity: 1;
    border-bottom: 2px solid oklch(0.78 0.05 148);
}

.biz-nav-item:focus-visible {
    outline: 2px solid var(--primary-green);
    outline-offset: 3px;
}

.biz-nav-num {
    font-family: 'Noto Serif TC', serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: oklch(0.72 0.05 148);
    transition: color 0.2s ease;
}

.biz-nav-item.is-active .biz-nav-num {
    color: var(--primary-green);
}

.biz-nav-name {
    font-size: 1.2rem;
    font-weight: 500;
    color: oklch(0.50 0.07 148);
    line-height: 1.3;
    transition: color 0.2s ease, font-weight 0.15s ease;
    white-space: nowrap;
}

.biz-nav-item.is-active .biz-nav-name {
    color: var(--text-dark);
    font-weight: 700;
}

.biz-nav-item:hover:not(.is-active) .biz-nav-name {
    color: oklch(0.38 0.09 148);
}

/* 展覽模式進度條 — 預設隱藏，只在 exhibition-mode 下顯示 */
.biz-progress-track {
    height: 2px;
    background: oklch(0.91 0.02 148);
    overflow: hidden;
    display: none;
}

body.exhibition-mode .biz-progress-track {
    display: block;
}

.biz-progress-fill {
    height: 100%;
    width: 0%;
    background: oklch(0.70 0.13 72);  /* amber */
    transition: width linear;
}

@media (prefers-reduced-motion: reduce) {
    .biz-progress-fill {
        display: none;
    }
}

/* 下：展示板 — 透明，融入頁面背景 */
.biz-feature {
    background: transparent;
    position: relative;
    overflow: visible;
    border-radius: 0;
    box-shadow: none;
}

.biz-content {
    display: none;
    position: relative;
    padding: 64px 0;
}

.biz-content.is-active {
    display: block;
    animation: biz-in 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

@keyframes biz-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0);   }
}

/* 背景裝飾大字 */
.biz-deco-num {
    position: absolute;
    top: 16px;
    right: 0;
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(7rem, 14vw, 12rem);
    font-weight: 700;
    color: oklch(0.945 0.012 148);
    line-height: 1;
    letter-spacing: -0.05em;
    pointer-events: none;
    user-select: none;
    z-index: 0;
}

/* 圖示：小、退到次要角色 */
.biz-icon {
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
    color: var(--accent-green);
    opacity: 0.7;
    margin-bottom: 18px;
    display: block;
}

/* 標題 */
.biz-title {
    position: relative;
    z-index: 1;
    font-family: 'Noto Serif TC', serif;
    font-size: clamp(2.5rem, 4.5vw, 3.75rem);
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

/* 說明 */
.biz-desc {
    position: relative;
    z-index: 1;
    font-size: 1.0625rem;
    line-height: 1.9;
    color: oklch(0.40 0.07 148);
    max-width: 72ch;
    margin-bottom: 40px;
}

/* 連結 */
.biz-link {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-green);
    text-decoration: none;
    letter-spacing: 0.03em;
    transition: gap 0.2s ease, color 0.2s ease;
}

.biz-link:hover {
    gap: 14px;
    color: var(--accent-green);
}

/* ── 響應式 ── */
@media (max-width: 768px) {
    .biz-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -webkit-mask-image: linear-gradient(to right, black 82%, transparent 100%);
        mask-image: linear-gradient(to right, black 82%, transparent 100%);
    }

    .biz-nav::-webkit-scrollbar {
        display: none;
    }

    .biz-nav-item {
        flex: 0 0 auto;
        min-width: 76px;
        padding: 16px 10px 14px;
    }

    .biz-deco-num {
        font-size: clamp(4rem, 14vw, 7rem);
    }

    .biz-content {
        padding: 48px 0;
    }
}

@media (max-width: 480px) {
    .biz-nav-item {
        min-width: 68px;
        padding: 14px 8px 12px;
    }

    .biz-nav-num {
        display: none;
    }

    .biz-deco-num {
        font-size: 4rem;
        top: 12px;
    }

    .biz-content {
        padding: 36px 0;
    }
}