/* 基礎重置 */
        * { box-sizing: border-box; }
        :root { --primary: #2c3e50; --fav: #ff4757; --bg: #f4f7f6; }
        html, body {
            margin: 0; padding: 0;
            width: 100%; height: 100vh;
            background: var(--bg);
            font-family: -apple-system, sans-serif;
            overflow-x: hidden;
            user-select: none;
        }
        header {
            background: var(--primary); color: white; padding: 12px 15px;
            font-weight: bold; font-size: 1.3rem; display: flex;
            align-items: center; justify-content: center; gap: 12px;
        }
        .header-icon { height: 38px; width: 38px; object-fit: cover; border-radius: 50%; overflow: hidden; display: block; }
        .section-title { padding: 15px 20px 5px; font-size: 0.9rem; color: #7f8c8d; font-weight: bold; }
        .menu-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 14px 24px 34px;
        }
        .menu-item {
            position: relative;
            background: white; border-radius: 12px; padding: 18px 8px; text-align: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05); cursor: pointer; border: 1px solid #eee;
        }
        .icon { font-size: 2.25rem; display: block; margin-bottom: 8px; }
        .fav-item { background: #fff5f6; border-color: #ffdae0; }
        .fav-label { font-size: 0.8rem; color: #e74c3c; margin-top: 5px; font-weight: bold; }

        #viewer {
            display: none; flex-direction: column; position: fixed;
            top: 0; left: 0; width: 100vw; height: 100vh; height: 100dvh;
            background: #000; z-index: 9999;
        }
        .viewer-header {
            flex: 0 0 auto; padding: 15px 20px; color: white; display: flex;
            justify-content: space-between; align-items: center; background: rgba(0,0,0,0.9);
            gap: 12px;
        }
        .viewer-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex: 0 0 auto;
        }
        .viewer-icon-btn {
            width: 36px;
            height: 36px;
            padding: 0;
            border: none;
            border-radius: 50%;
            background: transparent;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.45rem;
            line-height: 1;
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }
        .close-viewer-btn { font-size: 1.9rem; }
        #viewer-fav-btn { font-size: 1.8rem; color: #555; cursor: pointer; }
        #viewer-fav-btn.active { color: var(--fav); }

        .image-viewport {
            flex: 1 1 auto; position: relative; display: flex;
            align-items: center; justify-content: center; width: 100%; height: 100%; overflow: hidden;
        }
        .main-img {
            max-width: 100%; max-height: 100%; width: auto; height: auto;
            object-fit: contain; margin: auto;
        }
        .side-nav-zone {
            position: absolute;
            top: 0;
            bottom: 0;
            width: min(22vw, 140px);
            border: 0;
            padding: 0;
            background: transparent;
            cursor: pointer;
            z-index: 2;
            -webkit-tap-highlight-color: transparent;
        }
        .side-nav-left { left: 0; }
        .side-nav-right { right: 0; }
        .footer-minimal {
            flex: 0 0 auto; padding: 12px 16px; background: rgba(0,0,0,0.9);
            display: grid; grid-template-columns: 44px minmax(0, 1fr) 44px;
            align-items: center; gap: 12px;
        }
        .step-dots {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            min-width: 0;
            flex-wrap: wrap;
        }
        .dot { width: 8px; height: 8px; background: #555; border-radius: 50%; }
        .dot.active { background: white; width: 20px; border-radius: 4px; transition: 0.3s; }

        #qr-modal {
            display: none; position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
            background: rgba(0,0,0,0.95); z-index: 10000; flex-direction: column;
            align-items: center; justify-content: center;
        }
        .qr-box {
            background: white; padding: 30px; border-radius: 16px; text-align: center;
        }
        .qr-title { margin-top: 0; margin-bottom: 20px; color: #2c3e50; font-size: 1.2rem; }
        .qr-close {
            margin-top: 25px; padding: 12px 40px; background: #2c3e50; color: white;
            border: none; border-radius: 8px; font-size: 1.1rem; cursor: pointer; font-weight: bold;
        }

     /* 翻頁按鈕樣式 */
        #share-modal {
            display: none; position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
            background: rgba(0,0,0,0.95); z-index: 10000; flex-direction: column;
            align-items: center; justify-content: center; padding: 20px;
        }
        .share-box {
            width: min(92vw, 420px);
            background: white;
            padding: 24px;
            border-radius: 16px;
            text-align: center;
            box-shadow: 0 12px 30px rgba(0,0,0,0.25);
        }
        .share-title { margin: 0 0 8px; color: #2c3e50; font-size: 1.2rem; }
        .share-subtitle { margin: 0 0 14px; color: #5d6d7e; line-height: 1.4; }
        .share-url-input {
            width: 100%;
            border: 1px solid #dfe6e9;
            border-radius: 10px;
            padding: 11px 12px;
            color: #2c3e50;
            background: #f8fafc;
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .share-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }
        .share-btn, .share-close {
            border: none;
            border-radius: 10px;
            padding: 12px 10px;
            color: white;
            font-weight: bold;
            font-size: 1rem;
            cursor: pointer;
        }
        .share-btn.line { background: #06c755; }
        .share-btn.facebook { background: #1877f2; }
        .share-btn.threads { background: #101010; }
        .share-btn.instagram { background: #c13584; }
        .share-btn.copy { background: #34495e; }
        .share-close {
            width: 100%;
            margin-top: 14px;
            background: #2c3e50;
        }

.nav-btn {
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.nav-btn:active {
    transform: scale(0.94);
}

/* 讓圖片支援原生縮放 */
.main-img {
    max-width: 100%;
    max-height: 100%;
    touch-action: pinch-zoom; /* 僅允許縮放，手勢翻頁由按鈕處理 */
}

        /* 5. 底部說明與提示文字區域 (非浮動) */
        .step-desc {
            flex: 0 0 auto;
            background: rgba(0,0,0,0.9); /* 與進度點相同的底色 */
            color: #e0e0e0;              /* 柔和的淺灰色字體，閱讀舒適 */
            padding: 0 20px 20px 20px;   /* 調整間距讓它緊貼進度點下方 */
            text-align: center;
            font-size: 1.05rem;
            line-height: 1.4;
            letter-spacing: 0.5px;
        }

        /* 微調原本的進度點底部間距，讓它跟文字更緊密 */
        .footer-minimal {
            flex: 0 0 auto; padding: 15px 20px 10px 20px; background: rgba(0,0,0,0.9);
            display: flex; justify-content: center; align-items: center; gap: 10px;
        }
        /* === 開發者專屬頁尾樣式 (極簡連結版) === */
        .creator-footer {
            text-align: center;
            padding: 25px 0 20px 0;
            width: 100%;
        }

        .creator-footer a {
            color: #888888; /* 平常是低調的灰色 */
            text-decoration: none; /* 拿掉醜醜的底線 */
            font-size: 13px;
            letter-spacing: 1px;
            transition: color 0.2s;
        }

        .creator-footer a:active {
            color: #66b3ff; /* 手指點按時會發出微光，給予點擊回饋 */
        }
        /* 首頁專屬頁尾：極簡淺色風格 */
.site-footer {
    text-align: center;
    padding: 30px 20px;
    color: #7f8c8d; /* 跟您的 Section Title 使用一樣的高級灰 */
    font-size: 0.85rem;
    line-height: 1.5;
}

/* 消除連結的藍色底線，維持灰色質感 */
.site-footer a {
    color: #7f8c8d;
    text-decoration: none;
}

/* 點擊時變成深藍色，給予回饋 */
.site-footer a:active {
    color: #2c3e50;
}
        /* --- 更新提示燈樣式 --- */
#update-light {
    display: none; /* 預設隱藏，有更新才出現 */
    position: fixed;
    bottom: 30px;     /* 放在底部，與底部的滑動區區隔 */
    right: 15px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid #e0e0e0;
    padding: 6px 12px;
    border-radius: 30px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    cursor: pointer;
    z-index: 9999;
    align-items: center;
    gap: 8px;
    color: #555;
    font-size: 0.85rem;
    font-weight: bold;
    transition: transform 0.1s ease;
}

#update-light:active {
    transform: scale(0.95); /* 點擊時會有按下去的微縮小回饋 */
}

/* 會呼吸的小紅點 */
.pulse-dot {
    width: 10px;
    height: 10px;
    background-color: #ff4757; /* 醒目的警戒紅 */
    border-radius: 50%;
    display: inline-block;
    /* 製作呼吸擴散的動畫 */
    box-shadow: 0 0 0 0 rgba(255, 71, 87, 0.7);
    animation: pulse-animation 1.5s infinite;
}

@keyframes pulse-animation {
    0% { box-shadow: 0 0 0 0 rgba(255, 71, 87, 0.7); }
    70% { box-shadow: 0 0 0 8px rgba(255, 71, 87, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 71, 87, 0); }
}

        .top-nav { display:flex; gap:10px; padding:12px 20px 0; align-items:center; justify-content:center; flex-wrap:wrap; }
        .top-nav a { display:inline-block; padding:9px 14px; border-radius:999px; background:white; color:#2c3e50; text-decoration:none; font-weight:bold; box-shadow:0 2px 8px rgba(0,0,0,0.06); border:1px solid #e5e8e8; font-size:0.95rem; }
        .top-nav a.active { background:#2c3e50; color:white; }
        .page-note { margin:10px 20px 0; padding:10px 12px; border-radius:12px; background:#ffffff; color:#5d6d7e; font-size:0.9rem; line-height:1.4; border:1px solid #e5e8e8; }
        #reset-order-modal {
            display:none;
            position:fixed;
            inset:0;
            z-index:10001;
            align-items:center;
            justify-content:center;
            padding:20px;
            background:rgba(0,0,0,0.72);
        }
        .reset-order-box {
            width:min(92vw, 420px);
            background:#fff;
            border-radius:14px;
            padding:22px;
            text-align:center;
            box-shadow:0 14px 32px rgba(0,0,0,0.28);
        }
        .reset-order-title { margin:0 0 10px; color:#2c3e50; font-size:1.2rem; }
        .reset-order-message { margin:0 0 18px; color:#5d6d7e; line-height:1.5; }
        .reset-order-modal-actions { display:grid; gap:10px; }
        .reset-confirm-btn,
        .reset-cancel-btn {
            border:0;
            border-radius:10px;
            padding:12px 10px;
            font-weight:700;
            font-size:1rem;
            cursor:pointer;
        }
        .reset-confirm-btn { background:#2c3e50; color:#fff; }
        .reset-cancel-btn { background:#ecf0f1; color:#2c3e50; }


.sortable-main {
    position: relative;
    touch-action: auto;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.main-drag-grip {
    top: 4px;
    right: 4px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #5d6d7e;
    touch-action: none;
}

.main-dragging {
    user-select: none;
}

.main-drag-source {
    opacity: 0.35;
    outline: 2px dashed #3498db;
}

.main-drag-ghost {
    position: fixed;
    z-index: 20000;
    width: 42vw;
    max-width: 210px;
    background-color: #ffffff;
    border-radius: 12px;
    padding: 25px 10px;
    text-align: center;
    border: 2px solid #3498db;
    transform: translate(-50%, -50%) scale(1.05);
    opacity: 0.95;
    pointer-events: none;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}