* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif; background: linear-gradient(135deg, #fef9f4, #fff5eb, #fef3e2); min-height: 100vh; color: #232f3e; }
        .container { max-width: 1200px; margin: 0 auto; padding: 30px 20px; }
        header { text-align: center; margin-bottom: 40px; }
        header h1 { font-size: 2rem; background: linear-gradient(90deg, #ff9900, #e47911); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
        header p { color: #555; font-size: 0.95rem; }
        .input-section { background: #ffffff; border: 1px solid #e8ddd4; border-radius: 16px; padding: 30px; margin-bottom: 36px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
        .input-section h2 { font-size: 1.1rem; color: #c45500; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
        .input-group { display: flex; gap: 30px; flex-wrap: wrap; align-items: flex-start; }
        .input-item { flex: 1; min-width: 220px; }
        .input-item label { display: block; font-size: 0.85rem; color: #555; margin-bottom: 8px; }
        .input-item label .var-tag { display: inline-block; background: rgba(255,153,0,0.12); color: #c45500; padding: 1px 6px; border-radius: 4px; font-size: 0.75rem; margin-left: 6px; }
        .input-item input, .input-item select { width: 100%; padding: 12px 16px; background: #fafafa; border: 1px solid #d5d9d9; border-radius: 10px; color: #0f1111; font-size: 1.1rem; font-family: inherit; outline: none; transition: border-color 0.3s, box-shadow 0.3s; appearance: none; -webkit-appearance: none; }
        .input-item select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23555' d='M6 8L0 0h12z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; }
        .input-item select option { background: #ffffff; color: #0f1111; }
        .input-item input:focus, .input-item select:focus { border-color: #ff9900; box-shadow: 0 0 0 3px rgba(255,153,0,0.15); }
        .input-item input::placeholder { color: #aaa; }
        .btn-calc { padding: 12px 36px; background: linear-gradient(135deg, #ff9900, #e47911); border: none; border-radius: 10px; color: #fff; font-size: 1rem; font-weight: 600; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; white-space: nowrap; }
        .btn-calc:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(228,121,17,0.35); }
        .error-msg { color: #d32f2f; font-size: 0.8rem; margin-top: 4px; display: none; }
        .results { display: none; }
        .phase { background: #ffffff; border: 1px solid #e8ddd4; border-radius: 16px; margin-bottom: 24px; overflow: hidden; transition: all 0.3s; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
        .phase:hover { border-color: #ff9900; box-shadow: 0 4px 16px rgba(255,153,0,0.1); }
        .phase-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; cursor: pointer; user-select: none; }
        .phase-header .phase-title { display: flex; align-items: center; gap: 12px; }
        .phase-badge { display: inline-block; padding: 4px 12px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; }
        .phase-1 .phase-badge { background: rgba(76,175,80,0.12); color: #2e7d32; }
        .phase-2 .phase-badge { background: rgba(33,150,243,0.12); color: #1565c0; }
        .phase-3 .phase-badge { background: rgba(156,39,176,0.12); color: #7b1fa2; }
        .phase-header h3 { font-size: 1.05rem; color: #232f3e; }
        .phase-header .toggle-icon { font-size: 1.2rem; color: #888; transition: transform 0.3s; }
        .phase.open .toggle-icon { transform: rotate(180deg); }
        .phase-body { padding: 0 24px 24px; display: none; overflow: visible; }
        .phase.open .phase-body { display: block; }
        .phase-tools { font-size: 0.85rem; color: #666; margin-bottom: 16px; }
        .phase-tools strong { color: #333; }
        .price-table { width: 100%; border-collapse: collapse; table-layout: fixed; overflow: visible; }
        .price-table thead th { background: #fef7ef; padding: 12px 16px; text-align: center; font-size: 0.8rem; color: #555; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid #e8ddd4; overflow-wrap: break-word; position: relative; overflow: visible; }
        .price-table tbody td { padding: 12px 16px; border-bottom: 1px solid #f0e8e0; font-size: 0.9rem; text-align: center; position: relative; }
        .price-table tbody tr:hover { background: #fef9f4; }
        .price-table .row-label { color: #333; font-weight: 500; }
        .price-value { color: #c45500; font-weight: 600; font-variant-numeric: tabular-nums; }
        .price-range { color: #1565c0; font-weight: 500; }
        .price-blue { color: #1565c0; font-weight: 600; font-variant-numeric: tabular-nums; }
        .price-note { color: #666; font-size: 0.8rem; }
        .price-note-non-promo, .price-note-promo { font-size: 0.8rem; font-weight: 600; color: #2e7d32; }
        .price-table thead th.price-note-promo + th.price-note-non-promo { border-left: 2px dashed #d5d9d9; }
        .price-table thead th.price-note-non-promo + th.price-note-promo { border-left: 2px dashed #d5d9d9; }
        .price-table thead tr:nth-child(2) th:nth-child(2) { border-left: 2px dashed #d5d9d9; }
        .note-section { margin-top: 16px; padding: 14px 18px; background: #fffbf0; border-left: 3px solid #ff9900; border-radius: 0 8px 8px 0; font-size: 0.82rem; color: #555; line-height: 1.7; }
        .note-section strong { color: #c45500; }
        footer { text-align: center; margin-top: 40px; padding: 20px; color: #888; font-size: 0.8rem; }
        .tooltip-wrap { position: relative; display: inline-flex; align-items: center; cursor: help; }
        .tooltip-wrap .tooltip-icon { display: inline-block; width: 16px; height: 16px; line-height: 16px; text-align: center; font-size: 0.7rem; font-weight: 700; color: #c45500; border: 1px solid #c45500; border-radius: 50%; margin-left: 6px; flex-shrink: 0; }
        .tooltip-wrap .tooltip-box { display: none; position: absolute; left: 0; top: calc(100% + 4px); width: 360px; padding: 14px 16px; background: #ffffff; border: 1px solid #e8ddd4; border-radius: 10px; color: #333; font-size: 0.82rem; line-height: 1.7; z-index: 100; box-shadow: 0 8px 24px rgba(0,0,0,0.12); pointer-events: auto; }
        .tooltip-wrap:hover .tooltip-box { display: block; }
        .tooltip-wrap .tooltip-box .tooltip-inner { position: relative; display: inline; }
        .tooltip-wrap .tooltip-box .tooltip-inner .tooltip-link { color: #c45500; font-weight: 700; cursor: help; border-bottom: 1px dashed #c45500; }
        .tooltip-wrap .tooltip-box .tooltip-inner .tooltip-box-nested { display: none; position: absolute; left: 100%; top: -14px; margin-left: 4px; width: 380px; padding: 14px 16px; background: #fff9f2; border: 1px solid #e8ddd4; border-radius: 10px; color: #333; font-size: 0.82rem; line-height: 1.7; z-index: 200; box-shadow: 0 8px 24px rgba(0,0,0,0.12); pointer-events: auto; }
        .tooltip-wrap .tooltip-box .tooltip-inner.active .tooltip-box-nested { display: block; }
        .modal-trigger { color: #c45500; font-weight: 700; cursor: pointer; border-bottom: 1px dashed #c45500; }
        .modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 1000; justify-content: center; align-items: center; }
        .modal-overlay.active { display: flex; }
        .modal-content { background: #ffffff; border: 1px solid #e8ddd4; border-radius: 12px; padding: 24px 28px; max-width: 460px; width: 90%; color: #333; font-size: 0.88rem; line-height: 1.8; box-shadow: 0 12px 40px rgba(0,0,0,0.15); position: relative; }
        .modal-content .modal-close { position: absolute; top: 12px; right: 16px; background: none; border: none; color: #888; font-size: 1.2rem; cursor: pointer; }
        .modal-content .modal-close:hover { color: #c45500; }
        .modal-content .modal-title { color: #c45500; font-weight: 700; font-size: 1rem; margin-bottom: 12px; }
        .pd-tip { position: relative; display: inline; cursor: default; }
        .pd-tip .pd-tip-icon { display: inline-block; width: 14px; height: 14px; line-height: 14px; text-align: center; font-size: 0.6rem; font-weight: 700; color: #c45500; border: 1px solid #c45500; border-radius: 50%; margin-left: 4px; cursor: help; vertical-align: middle; }
        .pd-tip .pd-tip-box { display: none; position: absolute; left: 50%; transform: translateX(-50%); top: calc(100% + 6px); width: 420px; padding: 14px 16px; background: #ffffff; border: 1px solid #e8ddd4; border-radius: 10px; color: #333; font-size: 0.82rem; line-height: 1.7; z-index: 100; box-shadow: 0 8px 24px rgba(0,0,0,0.12); font-weight: 400; }
        .pd-tip .pd-tip-box.tip-right { left: 100%; top: 50%; transform: translateY(-50%); margin-left: 10px; width: 480px; }
        .pd-tip .pd-tip-icon:hover + .pd-tip-box, .pd-tip .pd-tip-icon:hover ~ .pd-tip-box, .pd-tip .pd-tip-box:hover { display: block; }
        .pd-tip .pd-tip-box img { width: 100%; border-radius: 6px; margin-top: 8px; border: 1px solid #e8ddd4; }

        .timeline-bar { display: flex; width: 100%; height: 40px; border-radius: 8px; overflow: hidden; margin: 16px 0 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
        .timeline-bar .tl-segment { display: flex; align-items: center; justify-content: center; color: #fff; font-size: 0.75rem; font-weight: 600; position: relative; transition: opacity 0.2s; cursor: default; }
        .timeline-bar .tl-segment:hover { opacity: 0.85; }
        .timeline-bar .tl-seg-1 { background: linear-gradient(135deg, #4caf50, #66bb6a); }
        .timeline-bar .tl-seg-2 { background: linear-gradient(135deg, #2196f3, #42a5f5); }
        .timeline-bar .tl-seg-3 { background: linear-gradient(135deg, #9c27b0, #ab47bc); }
        .timeline-dates { display: flex; justify-content: space-between; font-size: 0.72rem; color: #888; margin-bottom: 16px; }
        .gantt-calendar { margin: 16px 0; display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-start; }
        .gantt-month { width: 224px; }
        .gantt-month-title { font-size: 0.8rem; font-weight: 600; color: #555; margin-bottom: 6px; text-align: center; }
        .gantt-weekdays { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; margin-bottom: 2px; }
        .gantt-weekdays span { font-size: 0.6rem; color: #999; text-align: center; font-weight: 600; }
        .gantt-days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
        .gantt-day { width: 28px; height: 28px; border-radius: 4px; font-size: 0.65rem; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; }
        .gantt-day.empty { background: transparent; }
        .gantt-day.outside { background: #f5f5f5; color: #ccc; }
        .gantt-day.non-promo-1 { background: #c8e6c9; background-image: repeating-linear-gradient(45deg, transparent, transparent 2px, rgba(255,255,255,0.5) 2px, rgba(255,255,255,0.5) 4px); color: #2e7d32; }
        .gantt-day.promo-1 { background: #4caf50; }
        .gantt-day.non-promo-2 { background: #bbdefb; background-image: repeating-linear-gradient(45deg, transparent, transparent 2px, rgba(255,255,255,0.5) 2px, rgba(255,255,255,0.5) 4px); color: #1565c0; }
        .gantt-day.promo-2 { background: #2196f3; }
        .gantt-day.non-promo-3 { background: #e1bee7; background-image: repeating-linear-gradient(45deg, transparent, transparent 2px, rgba(255,255,255,0.5) 2px, rgba(255,255,255,0.5) 4px); color: #7b1fa2; }
        .gantt-day.promo-3 { background: #9c27b0; }
        .gantt-day.event-day { background: #ff9900; }
        .gantt-day.cooling-day { background: #ffcdd2; color: #c62828; }
        .gantt-legend { display: flex; flex-direction: column; gap: 8px; margin-top: 0; font-size: 0.72rem; color: #666; padding: 8px 12px; background: #fafafa; border-radius: 8px; min-width: 100px; }
        .gantt-legend span { display: flex; align-items: center; gap: 4px; }
        .gantt-legend .legend-box { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
        .phase-icon { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
        .phase-1 .phase-icon { background: rgba(76,175,80,0.15); }
        .phase-2 .phase-icon { background: rgba(33,150,243,0.15); }
        .phase-3 .phase-icon { background: rgba(156,39,176,0.15); }

        @media print {
            body { background: #fff !important; -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }
            .container { max-width: 100% !important; padding: 10px !important; }
            header, .container > .input-section, #whySection, #timelineSummary, footer { display: none !important; }
            .results { display: block !important; }
            .results > .input-section { display: none !important; }
            .results > div:first-child { display: none !important; }
            .results > div:nth-child(2) { display: none !important; }
            .results > div:nth-child(3) { display: none !important; }
            .phase { break-inside: avoid; }
            .phase-body { display: block !important; }
            .pd-tip-box, .tooltip-box, .tooltip-box-nested { display: none !important; }
        }
        @media (max-width: 768px) {
            .input-group {gap: 16px; }
            header h1 { font-size: 1.5rem; }
            .price-table { font-size: 0.8rem; }
            .price-table thead th, .price-table tbody td { padding: 8px 10px; }
            .tooltip-wrap .tooltip-box { width: 260px; }
            .tooltip-wrap .tooltip-box .tooltip-inner .tooltip-box-nested { width: 280px; left: 0; top: calc(100% + 4px); margin-left: 0; }
            .pd-tip .pd-tip-box { width: 280px; }
            .pd-tip .pd-tip-box.tip-right { width: 300px; left: 0; top: calc(100% + 6px); transform: translateX(0); margin-left: 0; }
        }