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

body {
    font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8eb 100%);
    min-height: 100vh;
    padding: 40px 20px;
}

.container {
    max-width: 500px;
    margin: 0 auto;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #7cb342 0%, #558b2f 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 24px;
}

.logo-text {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    letter-spacing: 2px;
}

.subtitle {
    color: #7cb342;
    font-size: 18px;
    font-weight: 500;
}

.card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 32px;
    margin-bottom: 24px;
}

.card-title {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #f0f0f0;
}

.form-group {
    margin-bottom: 24px;
}

.form-group:last-child {
    margin-bottom: 0;
}

label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

select {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    background: white;
    color: #333;
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
}

select:hover {
    border-color: #7cb342;
}

select:focus {
    outline: none;
    border-color: #7cb342;
    box-shadow: 0 0 0 3px rgba(124, 179, 66, 0.2);
}

.result-card {
    background: linear-gradient(135deg, #7cb342 0%, #558b2f 100%);
    color: white;
}

.result-card .card-title {
    color: rgba(255, 255, 255, 0.8);
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.result-row:last-child {
    border-bottom: none;
    padding-top: 16px;
    margin-top: 8px;
}

.result-label {
    font-size: 14px;
    opacity: 0.9;
}

.result-value {
    font-size: 16px;
    font-weight: 600;
}

.result-row.total .result-label {
    font-size: 16px;
    opacity: 1;
}

.result-row.total .result-value {
    font-size: 28px;
    font-weight: 700;
}

.note {
    text-align: center;
    font-size: 12px;
    color: #888;
    margin-top: 20px;
    line-height: 1.8;
}

.specs {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.spec-item {
    flex: 1;
    text-align: center;
}

.spec-label {
    font-size: 11px;
    opacity: 0.7;
    margin-bottom: 4px;
}

.spec-value {
    font-size: 14px;
    font-weight: 600;
}