:root {
            --peach-dark: #D4737B;
            --peach-main: #F4A6A9;
            --peach-light: #FDE8E9;
            --peach-glow: rgba(244,166,169,0.25);
            --forest-green: #8DAA91;
            --forest-dark: #4A6B50;
            --cream-bg: #FCF9F2;
            --text-main: #3E3035;
            --text-light: #8A797B;
            --white: #FFFFFF;
            --shadow-soft: 0 8px 32px rgba(92,74,77,0.10);
            --shadow-card: 0 4px 20px rgba(92,74,77,0.08);
        }

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

        body {
            font-family: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
            background: var(--cream-bg);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }

        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: transparent; }
        ::-webkit-scrollbar-thumb { background: var(--peach-main); border-radius: 3px; }

        .container { max-width: 860px; margin: 0 auto; padding: 0 24px; }

        /* ── Scroll reveal ── */
        .reveal {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity 0.65s ease, transform 0.65s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 { transition-delay: 0.1s; }
        .reveal-delay-2 { transition-delay: 0.2s; }
        .reveal-delay-3 { transition-delay: 0.3s; }

        /* ════════════════════════════════
           HERO
        ════════════════════════════════ */
        .hero {
            background: linear-gradient(160deg, #FDE8E9 0%, #fff 55%, #EDF4EE 100%);
            padding: 72px 24px 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -60px; right: -60px;
            width: 320px; height: 320px;
            background: radial-gradient(circle, var(--peach-glow) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -40px; left: -40px;
            width: 260px; height: 260px;
            background: radial-gradient(circle, rgba(141,170,145,0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-badge {
            display: inline-block;
            background: var(--peach-light);
            color: var(--peach-dark);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            padding: 4px 14px;
            border-radius: 20px;
            border: 1.5px solid var(--peach-main);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 900;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .hero h1 .accent { color: var(--peach-dark); }
        #hero-title {
            -webkit-user-select: none;
            user-select: none;
            -webkit-touch-callout: none;
        }

        .hero-tagline {
            font-size: clamp(1rem, 2.5vw, 1.25rem);
            color: var(--forest-dark);
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .hero-desc {
            font-size: 0.97rem;
            color: var(--text-light);
            max-width: 580px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 1;
        }

        .hero-screenshot {
            max-width: 100%;
            width: 780px;
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(92,74,77,0.16), 0 0 0 3px var(--white);
            display: block;
            margin: 0 auto 36px;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            position: relative;
            z-index: 1;
        }
        .hero-screenshot:hover {
            transform: translateY(-4px);
            box-shadow: 0 28px 70px rgba(92,74,77,0.20), 0 0 0 3px var(--white);
        }

        .btn-cta {
            display: inline-block;
            background: linear-gradient(135deg, var(--peach-dark), #C45F67);
            color: white;
            padding: 15px 44px;
            font-size: 1.05rem;
            font-weight: 700;
            text-decoration: none;
            border-radius: 32px;
            box-shadow: 0 6px 24px rgba(212,115,123,0.40);
            transition: all 0.3s ease;
            letter-spacing: 0.03em;
            position: relative;
            z-index: 1;
        }
        .btn-cta:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: 0 10px 32px rgba(212,115,123,0.50);
        }

        /* ── 英雄統計列 ── */
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 36px;
            margin-top: 36px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .stat-num {
            display: block;
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--peach-dark);
            line-height: 1.2;
        }
        .hero-stat .stat-label {
            font-size: 0.75rem;
            color: var(--text-light);
            letter-spacing: 0.03em;
        }

        /* ════════════════════════════════
           痛點區
        ════════════════════════════════ */
        .pain-section {
            padding: 64px 24px;
            background: var(--white);
            text-align: center;
        }

        .section-label {
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--peach-dark);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.4rem, 3.5vw, 2rem);
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .section-sub {
            font-size: 0.95rem;
            color: var(--text-light);
            max-width: 540px;
            margin: 0 auto 40px;
        }

        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            max-width: 800px;
            margin: 0 auto;
        }

        .pain-card {
            background: var(--cream-bg);
            border-radius: 14px;
            padding: 24px 20px;
            border: 1.5px solid #F0EBE8;
            text-align: left;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .pain-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }
        .pain-card .pain-icon {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }
        .pain-card h4 {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .pain-card p {
            font-size: 0.84rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ════════════════════════════════
           流程三步驟
        ════════════════════════════════ */
        .steps-section {
            padding: 64px 24px;
            background: var(--cream-bg);
            text-align: center;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            max-width: 800px;
            margin: 44px auto 0;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 12.5%;
            right: 12.5%;
            height: 2px;
            background: linear-gradient(90deg, var(--peach-light), var(--peach-main), var(--forest-green), var(--forest-green));
            z-index: 0;
        }
        .step-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 0 12px;
            position: relative;
            z-index: 1;
        }
        .step-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 14px;
            box-shadow: 0 4px 16px rgba(92,74,77,0.12);
        }
        .step-circle.s1 { background: linear-gradient(135deg, #FDE8E9, #fff); border: 2px solid var(--peach-main); }
        .step-circle.s2 { background: linear-gradient(135deg, #EDF4EE, #fff); border: 2px solid var(--forest-green); }
        .step-circle.s3 { background: linear-gradient(135deg, #FDE8E9, #fff); border: 2px solid var(--peach-main); }
        .step-circle.s4 { background: linear-gradient(135deg, #EDF4EE, #fff); border: 2px solid var(--forest-green); }
        .step-item h4 {
            font-size: 0.88rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 6px;
            text-align: center;
        }
        .step-item p {
            font-size: 0.78rem;
            color: var(--text-light);
            text-align: center;
            line-height: 1.55;
        }

        /* ════════════════════════════════
           功能區
        ════════════════════════════════ */
        .features-section { padding: 64px 24px; background: var(--white); }

        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 72px;
        }
        .feature-row:last-child { margin-bottom: 0; }
        .feature-row.reverse { direction: rtl; }
        .feature-row.reverse > * { direction: ltr; }

        .feature-text .feat-num {
            font-size: 0.72rem;
            font-weight: 800;
            letter-spacing: 0.1em;
            color: var(--peach-main);
            margin-bottom: 8px;
        }
        .feature-text h3 {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .feature-text p {
            font-size: 0.93rem;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.75;
        }
        .feature-pill {
            display: inline-block;
            background: var(--white);
            border: 1.5px solid var(--peach-main);
            color: var(--peach-dark);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            margin: 3px;
        }
        .feature-pill.green {
            border-color: var(--forest-green);
            color: var(--forest-dark);
        }

        .feature-img-wrap {
            position: relative;
        }
        .feature-img-wrap::before {
            content: '';
            position: absolute;
            inset: -8px;
            background: linear-gradient(135deg, var(--peach-light), transparent 60%);
            border-radius: 20px;
            z-index: 0;
        }
        .feature-img-wrap.green-glow::before {
            background: linear-gradient(135deg, #EDF4EE, transparent 60%);
        }
        .feature-img-wrap img {
            width: 100%;
            border-radius: 14px;
            box-shadow: var(--shadow-soft);
            display: block;
            position: relative;
            z-index: 1;
            transition: transform 0.35s ease;
        }
        .feature-img-wrap img:hover { transform: scale(1.02); }

        /* ════════════════════════════════
           費用區
        ════════════════════════════════ */
        .pricing-section {
            padding: 64px 24px;
            background: var(--cream-bg);
            text-align: center;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 720px;
            margin: 40px auto 0;
            text-align: left;
        }

        .pricing-card {
            border-radius: 18px;
            padding: 28px 26px;
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-soft);
        }
        .pricing-card.gemini {
            background: linear-gradient(135deg, #F0F7F1 0%, #fff 100%);
            border-color: var(--forest-green);
        }
        .pricing-card.claude {
            background: linear-gradient(135deg, #FDE8E9 0%, #fff 100%);
            border-color: var(--peach-main);
        }

        .pricing-card h3 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 6px;
        }
        .pricing-card.gemini h3 { color: var(--forest-dark); }
        .pricing-card.claude h3 { color: var(--peach-dark); }

        .pricing-headline {
            font-size: 1.5rem;
            font-weight: 900;
            margin: 8px 0 4px;
        }
        .pricing-card.gemini .pricing-headline { color: var(--forest-dark); }
        .pricing-card.claude .pricing-headline { color: var(--peach-dark); }

        .pricing-card ul {
            list-style: none;
            margin-top: 14px;
        }
        .pricing-card li {
            font-size: 0.85rem;
            color: var(--text-light);
            padding: 5px 0 5px 20px;
            position: relative;
            line-height: 1.55;
            border-bottom: 1px dashed #eee;
        }
        .pricing-card li:last-child { border-bottom: none; }
        .pricing-card.gemini li::before { content: '🌿'; position: absolute; left: 0; }
        .pricing-card.claude li::before { content: '🔍'; position: absolute; left: 0; }

        .pricing-note {
            margin-top: 28px;
            font-size: 0.82rem;
            color: var(--text-light);
            background: var(--white);
            border-radius: 10px;
            padding: 14px 18px;
            border: 1px solid #F0EBE8;
            max-width: 720px;
            margin-left: auto;
            margin-right: auto;
            text-align: left;
            line-height: 1.7;
        }
        .pricing-note strong { color: var(--text-main); }

        /* ════════════════════════════════
           Footer
        ════════════════════════════════ */
        .promo-footer {
            padding: 56px 24px 48px;
            text-align: center;
            background: linear-gradient(160deg, #fff 0%, #FDE8E9 60%, #EDF4EE 100%);
            border-top: 1px solid #F0EBE8;
            position: relative;
            overflow: hidden;
        }
        .promo-footer::before {
            content: '';
            position: absolute;
            top: -80px; right: -80px;
            width: 300px; height: 300px;
            background: radial-gradient(circle, var(--peach-glow) 0%, transparent 70%);
            pointer-events: none;
        }
        .promo-footer blockquote {
            font-size: 1.1rem;
            font-style: italic;
            color: var(--forest-dark);
            font-weight: 700;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .promo-footer blockquote::before { content: '「'; }
        .promo-footer blockquote::after { content: '」'; }
        .promo-footer .footer-sub {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 32px;
            font-style: normal;
            position: relative;
            z-index: 1;
        }
        .promo-footer .copy {
            font-size: 0.82rem;
            color: var(--text-light);
            margin-top: 20px;
            position: relative;
            z-index: 1;
        }
        /* 彩蛋：點年份觸發 */
        #secret-year {
            cursor: default;
            border-bottom: 1px dashed transparent;
            transition: border-color 0.3s;
        }
        #secret-year:hover {
            border-color: var(--peach-light);
        }

        /* ════════════════════════════════
           新功能 Update Section
        ════════════════════════════════ */
        .update-section {
            padding: 64px 24px;
            background: linear-gradient(160deg, #F8F4FF 0%, #fff 50%, #F0F7F1 100%);
        }
        /* ── Tab Navigation ── */
        .update-tabs {
            display: flex;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
            max-width: 780px;
            margin: 32px auto 0;
        }
        .update-tab {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 9px 18px;
            border-radius: 50px;
            border: 1.5px solid #E2DFF0;
            background: var(--white);
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--text-light);
            cursor: pointer;
            transition: all 0.25s ease;
            user-select: none;
        }
        .update-tab:hover {
            border-color: var(--peach-main);
            color: var(--peach-dark);
            background: var(--peach-light);
        }
        .update-tab.active {
            background: linear-gradient(135deg, var(--peach-main), #C45F67);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 14px rgba(232,115,74,0.25);
        }
        .update-tab .tab-count {
            display: inline-block;
            background: rgba(255,255,255,0.3);
            font-size: 0.68rem;
            padding: 1px 6px;
            border-radius: 8px;
            font-weight: 800;
        }
        .update-tab.active .tab-count {
            background: rgba(255,255,255,0.35);
        }

        /* ── Tab Panels ── */
        .update-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            max-width: 780px;
            margin: 20px auto 0;
        }
        .update-panel {
            display: none !important;
            animation: panelFadeIn 0.35s ease;
        }
        .update-panel.active { display: grid !important; }
        @keyframes panelFadeIn {
            from { opacity: 0; transform: translateY(8px); }
            to   { opacity: 1; transform: translateY(0); }
        }
        .update-card {
            background: var(--white);
            border-radius: 16px;
            padding: 24px 22px;
            border: 1.5px solid #EDE8F5;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            position: relative;
            overflow: hidden;
        }
        .update-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--peach-main), var(--forest-green));
        }
        .update-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }
        .update-badge {
            display: inline-block;
            font-size: 0.68rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            background: var(--peach-light);
            color: var(--peach-dark);
            padding: 2px 9px;
            border-radius: 12px;
            margin-bottom: 10px;
        }
        .update-badge.green {
            background: #EDF4EE;
            color: var(--forest-dark);
        }
        .update-card h4 {
            font-size: 1rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .update-card p {
            font-size: 0.84rem;
            color: var(--text-light);
            line-height: 1.65;
        }
        .update-card-btn {
            display: inline-block;
            margin-top: 14px;
            padding: 7px 16px;
            background: linear-gradient(135deg, var(--peach-dark), #C45F67);
            color: #fff;
            font-size: 0.82rem;
            font-weight: 700;
            border-radius: 20px;
            text-decoration: none;
            transition: opacity 0.2s ease, transform 0.2s ease;
        }
        .update-card-btn:hover {
            opacity: 0.88;
            transform: translateY(-1px);
        }
        .update-icon {
            font-size: 1.6rem;
            margin-bottom: 10px;
        }
        @media (max-width: 680px) {
            .update-tabs { gap: 6px; }
            .update-tab { padding: 7px 12px; font-size: 0.75rem; }
            .update-grid { grid-template-columns: 1fr; }
        }

        /* ════════════════════════════════
           Easter Egg 2 (Terminal Style)
        ════════════════════════════════ */
        #easter-overlay-2 {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 99999;
            background: rgba(4, 8, 16, 0.94);
            backdrop-filter: blur(10px);
            align-items: flex-start;
            justify-content: center;
            padding: 24px;
            overflow-y: auto;
        }
        #easter-overlay-2.open {
            display: flex;
            animation: fadeInOverlay 0.4s ease;
        }
        .easter-card-2 {
            background: #0d1117;
            border: 1px solid rgba(88, 166, 255, 0.20);
            border-radius: 16px;
            padding: 44px 40px;
            max-width: 580px;
            width: 100%;
            text-align: left;
            box-shadow: 0 0 0 1px rgba(88,166,255,0.08), 0 32px 80px rgba(0,0,0,0.7);
            position: relative;
            overflow: hidden;
            animation: cardSlideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
            margin: auto;
            font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
        }
        .easter-card-2::before {
            content: '';
            position: absolute;
            top: -80px; left: -80px;
            width: 240px; height: 240px;
            background: radial-gradient(circle, rgba(88,166,255,0.07) 0%, transparent 70%);
            pointer-events: none;
        }
        .easter-card-2::after {
            content: '';
            position: absolute;
            bottom: -60px; right: -60px;
            width: 200px; height: 200px;
            background: radial-gradient(circle, rgba(141,200,150,0.07) 0%, transparent 70%);
            pointer-events: none;
        }
        .easter-terminal-bar {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 28px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(88,166,255,0.12);
        }
        .terminal-dot {
            width: 10px; height: 10px;
            border-radius: 50%;
        }
        .terminal-dot.red { background: #ff5f57; }
        .terminal-dot.yellow { background: #febc2e; }
        .terminal-dot.green { background: #28c840; }
        .terminal-title {
            flex: 1;
            text-align: center;
            font-size: 0.72rem;
            color: rgba(88,166,255,0.45);
            letter-spacing: 0.05em;
        }
        .e2-prompt {
            font-size: 0.72rem;
            color: rgba(88,166,255,0.5);
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }
        .e2-prompt span { color: rgba(141,200,150,0.8); }
        .e2-log {
            font-size: 0.76rem;
            color: rgba(255,255,255,0.35);
            margin-bottom: 4px;
            line-height: 1.6;
        }
        .e2-log.dim { color: rgba(255,255,255,0.22); }
        .e2-divider {
            border: none;
            border-top: 1px solid rgba(88,166,255,0.10);
            margin: 20px 0;
        }
        .e2-msg {
            font-family: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
            font-size: 0.88rem;
            line-height: 1.9;
            color: rgba(255,255,255,0.78);
            margin-bottom: 12px;
        }
        .e2-msg strong { color: rgba(141,200,150,0.95); font-weight: 700; }
        .e2-msg em { color: rgba(88,166,255,0.85); font-style: normal; }
        .e2-sig {
            margin-top: 22px;
            padding-top: 16px;
            border-top: 1px solid rgba(88,166,255,0.10);
            font-size: 0.72rem;
            color: rgba(88,166,255,0.4);
            font-family: 'SF Mono', monospace;
        }
        .e2-close {
            margin-top: 24px;
            display: block;
            width: 100%;
            padding: 10px;
            background: rgba(88,166,255,0.06);
            color: rgba(88,166,255,0.55);
            border: 1px solid rgba(88,166,255,0.15);
            border-radius: 8px;
            font-size: 0.78rem;
            cursor: pointer;
            transition: all 0.2s;
            font-family: 'SF Mono', monospace;
            letter-spacing: 0.02em;
        }
        .e2-close:hover {
            background: rgba(88,166,255,0.12);
            color: rgba(88,166,255,0.85);
        }
        @media (max-width: 680px) {
            .easter-card-2 { padding: 28px 20px; }
        }

        /* ════════════════════════════════
           Easter Egg 3 (Repair Log Style)
        ════════════════════════════════ */
        #easter-overlay-3 {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 99999;
            background: rgba(12, 10, 6, 0.95);
            backdrop-filter: blur(12px);
            align-items: flex-start;
            justify-content: center;
            padding: 24px;
            overflow-y: auto;
        }
        #easter-overlay-3.open {
            display: flex;
            animation: fadeInOverlay 0.4s ease;
        }
        .easter-card-3 {
            background: linear-gradient(165deg, #1a1508 0%, #0f0f0b 100%);
            border: 1px solid rgba(218, 165, 32, 0.18);
            border-radius: 16px;
            padding: 44px 40px;
            max-width: 600px;
            width: 100%;
            text-align: left;
            box-shadow: 0 0 0 1px rgba(218,165,32,0.06), 0 32px 80px rgba(0,0,0,0.7);
            position: relative;
            overflow: hidden;
            animation: cardSlideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
            margin: auto;
        }
        .easter-card-3::before {
            content: '';
            position: absolute;
            top: -60px; left: -60px;
            width: 200px; height: 200px;
            background: radial-gradient(circle, rgba(218,165,32,0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .e3-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 24px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(218,165,32,0.12);
        }
        .e3-status-dot {
            width: 8px; height: 8px;
            border-radius: 50%;
            background: #28c840;
            box-shadow: 0 0 6px rgba(40,200,64,0.5);
            animation: e3pulse 2s ease-in-out infinite;
        }
        @keyframes e3pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }
        .e3-header-text {
            font-family: 'SF Mono', 'Fira Code', monospace;
            font-size: 0.72rem;
            color: rgba(218,165,32,0.55);
            letter-spacing: 0.04em;
        }
        .e3-section-label {
            font-family: 'SF Mono', monospace;
            font-size: 0.68rem;
            color: rgba(218,165,32,0.35);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin: 22px 0 10px;
        }
        .e3-fix-line {
            font-family: 'SF Mono', 'Fira Code', monospace;
            font-size: 0.73rem;
            color: rgba(255,255,255,0.30);
            margin-bottom: 3px;
            line-height: 1.7;
        }
        .e3-fix-line .ok { color: rgba(40,200,64,0.7); }
        .e3-fix-line .file { color: rgba(218,165,32,0.5); }
        .e3-divider {
            border: none;
            border-top: 1px solid rgba(218,165,32,0.08);
            margin: 24px 0;
        }
        .e3-msg {
            font-family: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
            font-size: 0.88rem;
            line-height: 1.95;
            color: rgba(255,255,255,0.78);
            margin-bottom: 14px;
        }
        .e3-msg strong { color: rgba(218,185,72,0.95); font-weight: 700; }
        .e3-msg em { color: rgba(218,165,32,0.8); font-style: normal; }
        .e3-sig {
            margin-top: 22px;
            padding-top: 16px;
            border-top: 1px solid rgba(218,165,32,0.10);
            font-size: 0.72rem;
            color: rgba(218,165,32,0.35);
            font-family: 'SF Mono', monospace;
        }
        .e3-close {
            margin-top: 24px;
            display: block;
            width: 100%;
            padding: 10px;
            background: rgba(218,165,32,0.06);
            color: rgba(218,165,32,0.55);
            border: 1px solid rgba(218,165,32,0.15);
            border-radius: 8px;
            font-size: 0.78rem;
            cursor: pointer;
            transition: all 0.2s;
            font-family: 'Noto Sans TC', 'SF Mono', monospace;
            letter-spacing: 0.02em;
        }
        .e3-close:hover {
            background: rgba(218,165,32,0.12);
            color: rgba(218,165,32,0.85);
        }
        @media (max-width: 680px) {
            .easter-card-3 { padding: 28px 20px; }
        }

        /* ════════════════════════════════
           Easter Egg Overlay
        ════════════════════════════════ */
        #easter-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 99999;
            background: rgba(10, 8, 12, 0.90);
            backdrop-filter: blur(8px);
            align-items: flex-start;
            justify-content: center;
            padding: 24px;
            overflow-y: auto;
        }
        #easter-overlay.open {
            display: flex;
            animation: fadeInOverlay 0.5s ease;
        }
        @keyframes fadeInOverlay {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        .easter-card {
            background: linear-gradient(160deg, #1a1228 0%, #2d1f35 60%, #1a2820 100%);
            border: 1px solid rgba(244,166,169,0.25);
            border-radius: 24px;
            padding: 48px 44px;
            max-width: 560px;
            width: 100%;
            text-align: left;
            box-shadow: 0 32px 80px rgba(0,0,0,0.6), inset 0 1px 0 rgba(244,166,169,0.1);
            position: relative;
            overflow: hidden;
            animation: cardSlideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
            margin: auto;
        }
        @keyframes cardSlideUp {
            from { opacity: 0; transform: translateY(32px) scale(0.97); }
            to { opacity: 1; transform: translateY(0) scale(1); }
        }
        .easter-card::before {
            content: '';
            position: absolute;
            top: -60px; right: -60px;
            width: 200px; height: 200px;
            background: radial-gradient(circle, rgba(244,166,169,0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .easter-sender {
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.15em;
            color: rgba(244,166,169,0.6);
            text-transform: uppercase;
            margin-bottom: 20px;
        }
        .easter-card p {
            font-size: 0.93rem;
            line-height: 1.9;
            color: rgba(255,255,255,0.82);
            margin-bottom: 14px;
        }
        .easter-card p strong {
            color: rgba(244,166,169,0.95);
            font-weight: 700;
        }
        .easter-card p em {
            color: rgba(141,200,150,0.9);
            font-style: normal;
        }
        .easter-sig {
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid rgba(244,166,169,0.15);
            font-size: 0.82rem;
            color: rgba(244,166,169,0.55);
            font-style: italic;
        }
        .easter-close {
            margin-top: 28px;
            display: block;
            width: 100%;
            padding: 11px;
            background: rgba(244,166,169,0.08);
            color: rgba(244,166,169,0.6);
            border: 1px solid rgba(244,166,169,0.2);
            border-radius: 10px;
            font-size: 0.82rem;
            cursor: pointer;
            transition: all 0.2s;
            font-family: inherit;
            letter-spacing: 0.03em;
        }
        .easter-close:hover {
            background: rgba(244,166,169,0.14);
            color: rgba(244,166,169,0.9);
        }

        /* ════════════════════════════════
           RWD
        ════════════════════════════════ */
        @media (max-width: 680px) {
            .pain-grid { grid-template-columns: 1fr; }
            .feature-row { grid-template-columns: 1fr; gap: 24px; }
            .feature-row.reverse { direction: ltr; }
            .pricing-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .steps-grid::before { display: none; }
            .hero-stats { gap: 20px; }
            .easter-card { padding: 32px 24px; }
        }

/* --- Easter Egg 4 (Checkpoint) styles --- */
#easter-overlay-4 {
    display:none; position:fixed; inset:0; z-index:10000;
    background:rgba(15,12,20,0.92); backdrop-filter:blur(14px);
    justify-content:center; align-items:flex-start; padding:20px;
    overflow-y:auto; -webkit-overflow-scrolling:touch;
}
#easter-overlay-4.open { display:flex; }
.easter-card-4 {
    max-width:540px; width:100%;
    background:linear-gradient(170deg, #1c1828 0%, #12101a 100%);
    border:1.5px solid rgba(212,168,67,0.15);
    border-radius:20px; padding:36px 28px;
    color:rgba(255,250,240,0.82); font-size:0.86rem; line-height:1.9;
    position:relative; box-shadow:0 24px 64px rgba(0,0,0,0.6);
    margin:auto;
}
.easter-card-4::before {
    content:''; position:absolute; top:-1px; left:20%; right:20%; height:2px;
    background:linear-gradient(90deg, transparent, rgba(212,168,67,0.3), transparent);
}
.e4-header { text-align:center; margin-bottom:20px; }
.e4-header-icon { font-size:2rem; margin-bottom:8px; }
.e4-header-label {
    font-size:0.7rem; font-weight:700; letter-spacing:0.18em;
    color:rgba(212,168,67,0.45);
}
.e4-stat-row {
    display:flex; justify-content:center; gap:24px;
    margin:16px 0 20px; flex-wrap:wrap;
}
.e4-stat {
    text-align:center; padding:8px 16px;
    background:rgba(255,255,255,0.03); border-radius:12px;
    border:1px solid rgba(255,255,255,0.05);
}
.e4-stat-num { font-size:1.4rem; font-weight:900; color:rgba(212,168,67,0.7); }
.e4-stat-label { font-size:0.65rem; color:rgba(255,255,255,0.35); margin-top:2px; }
.e4-msg { margin-bottom:12px; }
.e4-msg em { color:rgba(212,168,67,0.65); font-style:italic; }
.e4-msg strong { color:rgba(255,255,255,0.92); }
.e4-close {
    display:block; width:100%; margin-top:20px; padding:12px;
    background:rgba(212,168,67,0.08); border:1px solid rgba(212,168,67,0.18);
    border-radius:12px; color:rgba(212,168,67,0.7); font-weight:700;
    font-size:0.85rem; cursor:pointer; transition:all 0.2s;
}
.e4-close:hover { background:rgba(212,168,67,0.15); }
.e4-sig {
    text-align:right; font-size:0.7rem; color:rgba(212,168,67,0.3);
    margin-top:16px; font-weight:600;
}
@media (max-width:480px) { .easter-card-4 { padding:28px 20px; } }